modiloader | a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616

Analysis

max time kernel
119s
max time network
22s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
20-12-2024 03:40

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General

Target

a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe
Size

90KB
MD5

ed635f2310b0ae8702e47c605c2fb8e0
SHA1

de3c77dd9c73f78be2d677df1affa9efd578909e
SHA256

a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616
SHA512

413c412ad23e9aa78fb78d2727056ff27b1bb151ecf36c359aada7cc314c681eb0d07089c87f6e2416922fd127baf4a5571f6f4490bd2391db4243565db8ce64
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDR:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3z

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 2 IoCs

resource	yara_rule
behavioral1/memory/2576-249-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral1/memory/2576-258-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

pid	Process
1012	csrsll.exe
1728	csrsll.exe
2576	csrsll.exe

Loads dropped DLL 5 IoCs

pid	Process
2256	a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe
2256	a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe
2256	a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe
2256	a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe
2256	a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.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-1-5-21-2703099537-420551529-3771253338-1000\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 2312 set thread context of 2256	2312	a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe	30
PID 1012 set thread context of 1728	1012	csrsll.exe	35
PID 1012 set thread context of 2576	1012	csrsll.exe	36

UPX packed file 22 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2312-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2312-27-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2312-89-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2256-95-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2256-92-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2256-99-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2256-104-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2256-102-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2256-101-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2256-105-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2312-107-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2256-134-0x00000000032E0000-0x0000000003333000-memory.dmp	upx
behavioral1/files/0x00090000000120fe-132.dat	upx
behavioral1/memory/1012-148-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2256-151-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1012-211-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2576-249-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/1012-248-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2256-254-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1012-251-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1728-255-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2576-258-0x0000000000400000-0x0000000000414000-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	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	a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe
Token: SeDebugPrivilege	1728	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2312	a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe
2256	a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe
1012	csrsll.exe
1728	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2312 wrote to memory of 2256	2312	a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe	30
PID 2312 wrote to memory of 2256	2312	a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe	30
PID 2312 wrote to memory of 2256	2312	a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe	30
PID 2312 wrote to memory of 2256	2312	a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe	30
PID 2312 wrote to memory of 2256	2312	a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe	30
PID 2312 wrote to memory of 2256	2312	a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe	30
PID 2312 wrote to memory of 2256	2312	a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe	30
PID 2312 wrote to memory of 2256	2312	a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe	30
PID 2256 wrote to memory of 772	2256	a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe	31
PID 2256 wrote to memory of 772	2256	a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe	31
PID 2256 wrote to memory of 772	2256	a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe	31
PID 2256 wrote to memory of 772	2256	a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe	31
PID 772 wrote to memory of 1108	772	cmd.exe	33
PID 772 wrote to memory of 1108	772	cmd.exe	33
PID 772 wrote to memory of 1108	772	cmd.exe	33
PID 772 wrote to memory of 1108	772	cmd.exe	33
PID 2256 wrote to memory of 1012	2256	a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe	34
PID 2256 wrote to memory of 1012	2256	a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe	34
PID 2256 wrote to memory of 1012	2256	a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe	34
PID 2256 wrote to memory of 1012	2256	a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe	34
PID 1012 wrote to memory of 1728	1012	csrsll.exe	35
PID 1012 wrote to memory of 1728	1012	csrsll.exe	35
PID 1012 wrote to memory of 1728	1012	csrsll.exe	35
PID 1012 wrote to memory of 1728	1012	csrsll.exe	35
PID 1012 wrote to memory of 1728	1012	csrsll.exe	35
PID 1012 wrote to memory of 1728	1012	csrsll.exe	35
PID 1012 wrote to memory of 1728	1012	csrsll.exe	35
PID 1012 wrote to memory of 1728	1012	csrsll.exe	35
PID 1012 wrote to memory of 2576	1012	csrsll.exe	36
PID 1012 wrote to memory of 2576	1012	csrsll.exe	36
PID 1012 wrote to memory of 2576	1012	csrsll.exe	36
PID 1012 wrote to memory of 2576	1012	csrsll.exe	36
PID 1012 wrote to memory of 2576	1012	csrsll.exe	36
PID 1012 wrote to memory of 2576	1012	csrsll.exe	36
PID 1012 wrote to memory of 2576	1012	csrsll.exe	36
PID 1012 wrote to memory of 2576	1012	csrsll.exe	36

C:\Users\Admin\AppData\Local\Temp\a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe
"C:\Users\Admin\AppData\Local\Temp\a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2312
- C:\Users\Admin\AppData\Local\Temp\a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe
  "C:\Users\Admin\AppData\Local\Temp\a1f8179c5313fafea1facdc83e7fba6af07e82f97c4abd75f0a5750827fc2616N.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2256
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\CQPBJ.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:772
  - - 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:1108
- - 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:1012
  - - 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:1728
  - - 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:2576

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\CQPBJ.bat

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
a2ed5c09a1f7936d483a06e7c2fde603

SHA1
13e3b36114a9ef7b9e0e19ef74c826f74c7bb5cb

SHA256
ae7ab2d4fa245a722159af5ce7ff16d12e503b8aa87f43c5f8acbf8a3faa1585

SHA512
9fe282d8e1f520c110cf4ec5d620834e406ed571a3ff7b536cdce83e1127c7b40b10448342cdeb63331c79b3d8d17feb7f46bc73df60a6d2ef73362b38630438

Download Submit
memory/1012-251-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1012-248-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1012-175-0x0000000000300000-0x0000000000301000-memory.dmp

Filesize
4KB

Download
memory/1012-211-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1012-164-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/1012-154-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1012-148-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1728-255-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2256-151-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2256-95-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2256-92-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2256-90-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2256-254-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2256-97-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2256-134-0x00000000032E0000-0x0000000003333000-memory.dmp

Filesize
332KB

Download
memory/2256-99-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2256-104-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2256-102-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2256-101-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2256-105-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2312-27-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2312-41-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download
memory/2312-71-0x0000000002440000-0x0000000002441000-memory.dmp

Filesize
4KB

Download
memory/2312-89-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2312-107-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2312-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2312-94-0x0000000002790000-0x00000000027E3000-memory.dmp

Filesize
332KB

Download
memory/2312-61-0x0000000002420000-0x0000000002421000-memory.dmp

Filesize
4KB

Download
memory/2312-29-0x00000000003D0000-0x00000000003D1000-memory.dmp

Filesize
4KB

Download
memory/2312-16-0x00000000001F0000-0x00000000001F1000-memory.dmp

Filesize
4KB

Download
memory/2312-5-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

Download
memory/2312-13-0x0000000000404000-0x0000000000405000-memory.dmp

Filesize
4KB

Download
memory/2312-79-0x0000000002460000-0x0000000002462000-memory.dmp

Filesize
8KB

Download
memory/2312-3-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

Download
memory/2576-249-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2576-258-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads