modiloader | 31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4

Analysis

max time kernel
149s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02-01-2025 19:30

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General

Target

31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe
Size

90KB
MD5

029b98fc43f56e951cbc5ce4e2f25737
SHA1

743dd358edb156f04bb5077fe53492e7116ed778
SHA256

31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4
SHA512

06ec4abe7f527cd36fcd9235d0142a2259533902bbe1598d435efc37dece108822542afac6ddc73db11ed0cad8cc4dd916d57140807bf35037f3f836b5deed26
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDg:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3C

Score

10^/10

modiloader discovery persistence trojan upx

Malware Config

Signatures

ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader
Modiloader family
modiloader

ModiLoader Second Stage 1 IoCs

resource	yara_rule
behavioral1/memory/1524-265-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

pid	Process
2620	csrsll.exe
2148	csrsll.exe
1524	csrsll.exe

Loads dropped DLL 5 IoCs

pid	Process
2580	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe
2580	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe
2580	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe
2580	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe
2580	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1752 set thread context of 2580	1752	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	31
PID 2620 set thread context of 2148	2620	csrsll.exe	36
PID 2620 set thread context of 1524	2620	csrsll.exe	37

UPX packed file 22 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1752-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1752-26-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1752-92-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1752-89-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2580-102-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2580-109-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2580-107-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2580-106-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1752-104-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2580-98-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2580-96-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1752-82-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1752-79-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/files/0x00100000000139a5-134.dat	upx
behavioral1/memory/2580-136-0x00000000026E0000-0x0000000002733000-memory.dmp	upx
behavioral1/memory/2580-155-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2620-216-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1524-251-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/2620-253-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2580-261-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2148-262-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1524-265-0x0000000000400000-0x0000000000414000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe
Token: SeDebugPrivilege	2148	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1752	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe
2580	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe
2620	csrsll.exe
2148	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1752 wrote to memory of 2580	1752	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	31
PID 1752 wrote to memory of 2580	1752	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	31
PID 1752 wrote to memory of 2580	1752	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	31
PID 1752 wrote to memory of 2580	1752	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	31
PID 1752 wrote to memory of 2580	1752	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	31
PID 1752 wrote to memory of 2580	1752	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	31
PID 1752 wrote to memory of 2580	1752	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	31
PID 1752 wrote to memory of 2580	1752	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	31
PID 2580 wrote to memory of 792	2580	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	32
PID 2580 wrote to memory of 792	2580	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	32
PID 2580 wrote to memory of 792	2580	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	32
PID 2580 wrote to memory of 792	2580	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	32
PID 792 wrote to memory of 2784	792	cmd.exe	34
PID 792 wrote to memory of 2784	792	cmd.exe	34
PID 792 wrote to memory of 2784	792	cmd.exe	34
PID 792 wrote to memory of 2784	792	cmd.exe	34
PID 2580 wrote to memory of 2620	2580	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	35
PID 2580 wrote to memory of 2620	2580	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	35
PID 2580 wrote to memory of 2620	2580	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	35
PID 2580 wrote to memory of 2620	2580	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	35
PID 2620 wrote to memory of 2148	2620	csrsll.exe	36
PID 2620 wrote to memory of 2148	2620	csrsll.exe	36
PID 2620 wrote to memory of 2148	2620	csrsll.exe	36
PID 2620 wrote to memory of 2148	2620	csrsll.exe	36
PID 2620 wrote to memory of 2148	2620	csrsll.exe	36
PID 2620 wrote to memory of 2148	2620	csrsll.exe	36
PID 2620 wrote to memory of 2148	2620	csrsll.exe	36
PID 2620 wrote to memory of 2148	2620	csrsll.exe	36
PID 2620 wrote to memory of 1524	2620	csrsll.exe	37
PID 2620 wrote to memory of 1524	2620	csrsll.exe	37
PID 2620 wrote to memory of 1524	2620	csrsll.exe	37
PID 2620 wrote to memory of 1524	2620	csrsll.exe	37
PID 2620 wrote to memory of 1524	2620	csrsll.exe	37
PID 2620 wrote to memory of 1524	2620	csrsll.exe	37
PID 2620 wrote to memory of 1524	2620	csrsll.exe	37
PID 2620 wrote to memory of 1524	2620	csrsll.exe	37

C:\Users\Admin\AppData\Local\Temp\31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe
"C:\Users\Admin\AppData\Local\Temp\31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1752
- C:\Users\Admin\AppData\Local\Temp\31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe
  "C:\Users\Admin\AppData\Local\Temp\31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2580
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\HDYCQ.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:792
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Win Pdf" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe" /f
      4⤵
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      PID:2784
- - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2620
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:2148
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:1524

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\HDYCQ.bat

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe

Filesize
90KB

MD5
a0aacee5507435460da16c7829de5d12

SHA1
24dd563c9f7f34b28e05068a70675988bbe8b849

SHA256
7c590caa655bf5152d2922b29e2c3b9cee7b72145051f6c1e23d1a8d4487fade

SHA512
499c907f73288e9d23fbfc98606c5aee7ec866a102c1f3980ac52e94bafccde90a27dcfdc1c502c8a40a619a1f1ecdc64779325ff633364bd5c3900f069a5c40

Download Submit
memory/1524-265-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1524-251-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1752-80-0x00000000004F0000-0x00000000004F2000-memory.dmp

Filesize
8KB

Download
memory/1752-89-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1752-29-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download
memory/1752-61-0x00000000004B0000-0x00000000004B1000-memory.dmp

Filesize
4KB

Download
memory/1752-92-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1752-15-0x00000000003C0000-0x00000000003C1000-memory.dmp

Filesize
4KB

Download
memory/1752-71-0x00000000004D0000-0x00000000004D1000-memory.dmp

Filesize
4KB

Download
memory/1752-18-0x0000000000404000-0x0000000000405000-memory.dmp

Filesize
4KB

Download
memory/1752-3-0x00000000003A0000-0x00000000003A1000-memory.dmp

Filesize
4KB

Download
memory/1752-82-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1752-5-0x00000000003A0000-0x00000000003A1000-memory.dmp

Filesize
4KB

Download
memory/1752-26-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1752-93-0x0000000002770000-0x00000000027C3000-memory.dmp

Filesize
332KB

Download
memory/1752-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1752-104-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1752-41-0x0000000000470000-0x0000000000471000-memory.dmp

Filesize
4KB

Download
memory/1752-79-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2148-262-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2580-109-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2580-100-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2580-98-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2580-106-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2580-107-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2580-136-0x00000000026E0000-0x0000000002733000-memory.dmp

Filesize
332KB

Download
memory/2580-151-0x00000000026F0000-0x0000000002743000-memory.dmp

Filesize
332KB

Download
memory/2580-150-0x00000000026F0000-0x0000000002743000-memory.dmp

Filesize
332KB

Download
memory/2580-149-0x00000000026F0000-0x0000000002743000-memory.dmp

Filesize
332KB

Download
memory/2580-155-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2580-94-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2580-102-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2580-213-0x00000000026E0000-0x0000000002733000-memory.dmp

Filesize
332KB

Download
memory/2580-261-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2580-236-0x00000000026F0000-0x0000000002743000-memory.dmp

Filesize
332KB

Download
memory/2580-234-0x00000000026E0000-0x0000000002733000-memory.dmp

Filesize
332KB

Download
memory/2580-96-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2580-238-0x00000000026F0000-0x0000000002743000-memory.dmp

Filesize
332KB

Download
memory/2620-253-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2620-168-0x00000000003D0000-0x00000000003D1000-memory.dmp

Filesize
4KB

Download
memory/2620-179-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download
memory/2620-216-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2620-158-0x00000000003B0000-0x00000000003B1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads