modiloader | fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371

Analysis

max time kernel
120s
max time network
17s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04-01-2025 16:22

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General

Target

fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe
Size

90KB
MD5

63257fc21ad91e52255f0bca7900df30
SHA1

89d6b597a237a70eda1b488e82f08eff21350e21
SHA256

fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371
SHA512

5702d2c87713dfe3f6dd570ded56d8f4b0c7dbbaedfde26968f190be98c414689fae1123c2b64bc562d1e395922e82f18cba1965d59917cc5ac4b18d226eb059
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDP:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3d

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/1944-262-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

pid	Process
2808	csrsll.exe
336	csrsll.exe
1944	csrsll.exe

Loads dropped DLL 5 IoCs

pid	Process
2144	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe
2144	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe
2144	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe
2144	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe
2144	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.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 2704 set thread context of 2144	2704	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	30
PID 2808 set thread context of 336	2808	csrsll.exe	35
PID 2808 set thread context of 1944	2808	csrsll.exe	36

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2704-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2704-26-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2704-89-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2144-99-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2144-102-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2704-96-0x0000000002590000-0x00000000025E3000-memory.dmp	upx
behavioral1/memory/2144-94-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2144-105-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2144-107-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2704-104-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2144-92-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/files/0x0033000000017474-150.dat	upx
behavioral1/memory/2144-153-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2808-219-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2144-256-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1944-252-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/2808-249-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/336-259-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1944-262-0x0000000000400000-0x0000000000414000-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	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe
Token: SeDebugPrivilege	336	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2704	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe
2144	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe
2808	csrsll.exe
336	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2704 wrote to memory of 2144	2704	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	30
PID 2704 wrote to memory of 2144	2704	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	30
PID 2704 wrote to memory of 2144	2704	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	30
PID 2704 wrote to memory of 2144	2704	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	30
PID 2704 wrote to memory of 2144	2704	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	30
PID 2704 wrote to memory of 2144	2704	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	30
PID 2704 wrote to memory of 2144	2704	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	30
PID 2704 wrote to memory of 2144	2704	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	30
PID 2144 wrote to memory of 2276	2144	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	31
PID 2144 wrote to memory of 2276	2144	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	31
PID 2144 wrote to memory of 2276	2144	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	31
PID 2144 wrote to memory of 2276	2144	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	31
PID 2276 wrote to memory of 2900	2276	cmd.exe	33
PID 2276 wrote to memory of 2900	2276	cmd.exe	33
PID 2276 wrote to memory of 2900	2276	cmd.exe	33
PID 2276 wrote to memory of 2900	2276	cmd.exe	33
PID 2144 wrote to memory of 2808	2144	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	34
PID 2144 wrote to memory of 2808	2144	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	34
PID 2144 wrote to memory of 2808	2144	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	34
PID 2144 wrote to memory of 2808	2144	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	34
PID 2808 wrote to memory of 336	2808	csrsll.exe	35
PID 2808 wrote to memory of 336	2808	csrsll.exe	35
PID 2808 wrote to memory of 336	2808	csrsll.exe	35
PID 2808 wrote to memory of 336	2808	csrsll.exe	35
PID 2808 wrote to memory of 336	2808	csrsll.exe	35
PID 2808 wrote to memory of 336	2808	csrsll.exe	35
PID 2808 wrote to memory of 336	2808	csrsll.exe	35
PID 2808 wrote to memory of 336	2808	csrsll.exe	35
PID 2808 wrote to memory of 1944	2808	csrsll.exe	36
PID 2808 wrote to memory of 1944	2808	csrsll.exe	36
PID 2808 wrote to memory of 1944	2808	csrsll.exe	36
PID 2808 wrote to memory of 1944	2808	csrsll.exe	36
PID 2808 wrote to memory of 1944	2808	csrsll.exe	36
PID 2808 wrote to memory of 1944	2808	csrsll.exe	36
PID 2808 wrote to memory of 1944	2808	csrsll.exe	36
PID 2808 wrote to memory of 1944	2808	csrsll.exe	36

C:\Users\Admin\AppData\Local\Temp\fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe
"C:\Users\Admin\AppData\Local\Temp\fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2704
- C:\Users\Admin\AppData\Local\Temp\fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe
  "C:\Users\Admin\AppData\Local\Temp\fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2144
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\UTFOF.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2276
  - - 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:2900
- - 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:2808
  - - 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:336
  - - 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:1944

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

Replay Monitor

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Downloads

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

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
dd3a5acc9d67a9fe8714470db5be94a7

SHA1
9f25f100cf1736151bad594402881948bcc94809

SHA256
d5485128b23334cf07ceef99af386f640313ed3a8fd35a47c0e3b7660121822b

SHA512
320ac9bf43d034191ef7bf8e745c590ce2a97e896ab9d5300cada4cfa3291ec34f0ce3b96b7dd68f416f72a313da77b51ecedec57bf3d2e7993dae8000d5e176

Download Submit
memory/336-259-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1944-262-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1944-252-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2144-146-0x0000000003480000-0x00000000034D3000-memory.dmp

Filesize
332KB

Download
memory/2144-97-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2144-244-0x0000000003480000-0x00000000034D3000-memory.dmp

Filesize
332KB

Download
memory/2144-213-0x0000000003480000-0x00000000034D3000-memory.dmp

Filesize
332KB

Download
memory/2144-153-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2144-256-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2144-147-0x0000000003480000-0x00000000034D3000-memory.dmp

Filesize
332KB

Download
memory/2144-99-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2144-102-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2144-242-0x0000000003480000-0x00000000034D3000-memory.dmp

Filesize
332KB

Download
memory/2144-148-0x0000000003480000-0x00000000034D3000-memory.dmp

Filesize
332KB

Download
memory/2144-94-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2144-105-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2144-107-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2144-149-0x0000000003480000-0x00000000034D3000-memory.dmp

Filesize
332KB

Download
memory/2144-92-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2144-90-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2144-250-0x0000000003480000-0x00000000034D3000-memory.dmp

Filesize
332KB

Download
memory/2704-89-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2704-29-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/2704-96-0x0000000002590000-0x00000000025E3000-memory.dmp

Filesize
332KB

Download
memory/2704-79-0x00000000003A0000-0x00000000003A2000-memory.dmp

Filesize
8KB

Download
memory/2704-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2704-71-0x0000000000380000-0x0000000000381000-memory.dmp

Filesize
4KB

Download
memory/2704-5-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2704-3-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2704-15-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/2704-104-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2704-20-0x0000000000404000-0x0000000000405000-memory.dmp

Filesize
4KB

Download
memory/2704-41-0x00000000002A0000-0x00000000002A1000-memory.dmp

Filesize
4KB

Download
memory/2704-61-0x00000000002E0000-0x00000000002E1000-memory.dmp

Filesize
4KB

Download
memory/2704-26-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2808-166-0x0000000000290000-0x0000000000291000-memory.dmp

Filesize
4KB

Download
memory/2808-219-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2808-249-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2808-177-0x00000000002D0000-0x00000000002D1000-memory.dmp

Filesize
4KB

Download
memory/2808-156-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads