modiloader | c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973e

Analysis

max time kernel
119s
max time network
118s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
07-11-2024 04:12

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General

Target

c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe
Size

90KB
MD5

9d90a42a0f9709f28d7ee9555d632bd0
SHA1

65bac6839d8714979cd1b0af8d1ed09c35225381
SHA256

c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973e
SHA512

920088f9313d345ee6ce5f28a0c6ee828f9ab674e4748c004212d94e695b827f9753e4bffeae5b08b7b20f1eb189abe35e51da7bd94c7dec4a161c6fda6a6c74
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDK:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3Y

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 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2516-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2516-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2516-64-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid	Process
1480	csrsll.exe
4368	csrsll.exe
2516	csrsll.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.execsrsll.exe

description	pid	Process	procid_target
PID 5032 set thread context of 2756	5032	c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe	93
PID 1480 set thread context of 4368	1480	csrsll.exe	101
PID 1480 set thread context of 2516	1480	csrsll.exe	102

UPX packed file 19 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/5032-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5032-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2756-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2756-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5032-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2756-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0014000000023a24-29.dat	upx
behavioral2/memory/1480-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2756-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1480-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1480-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2516-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2516-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2516-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2516-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2756-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1480-59-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4368-63-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2516-64-0x0000000000400000-0x0000000000414000-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

Processes:

cmd.exereg.execsrsll.execsrsll.execsrsll.exec195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exec195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe

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	c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

csrsll.exe

description	pid	Process
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe
Token: SeDebugPrivilege	4368	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exec195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.execsrsll.execsrsll.exe

pid	Process
5032	c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe
2756	c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe
1480	csrsll.exe
4368	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exec195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.execmd.execsrsll.exe

description	pid	Process	procid_target
PID 5032 wrote to memory of 2756	5032	c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe	93
PID 5032 wrote to memory of 2756	5032	c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe	93
PID 5032 wrote to memory of 2756	5032	c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe	93
PID 5032 wrote to memory of 2756	5032	c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe	93
PID 5032 wrote to memory of 2756	5032	c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe	93
PID 5032 wrote to memory of 2756	5032	c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe	93
PID 5032 wrote to memory of 2756	5032	c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe	93
PID 5032 wrote to memory of 2756	5032	c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe	93
PID 2756 wrote to memory of 2736	2756	c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe	96
PID 2756 wrote to memory of 2736	2756	c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe	96
PID 2756 wrote to memory of 2736	2756	c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe	96
PID 2736 wrote to memory of 4092	2736	cmd.exe	99
PID 2736 wrote to memory of 4092	2736	cmd.exe	99
PID 2736 wrote to memory of 4092	2736	cmd.exe	99
PID 2756 wrote to memory of 1480	2756	c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe	100
PID 2756 wrote to memory of 1480	2756	c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe	100
PID 2756 wrote to memory of 1480	2756	c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe	100
PID 1480 wrote to memory of 4368	1480	csrsll.exe	101
PID 1480 wrote to memory of 4368	1480	csrsll.exe	101
PID 1480 wrote to memory of 4368	1480	csrsll.exe	101
PID 1480 wrote to memory of 4368	1480	csrsll.exe	101
PID 1480 wrote to memory of 4368	1480	csrsll.exe	101
PID 1480 wrote to memory of 4368	1480	csrsll.exe	101
PID 1480 wrote to memory of 4368	1480	csrsll.exe	101
PID 1480 wrote to memory of 4368	1480	csrsll.exe	101
PID 1480 wrote to memory of 2516	1480	csrsll.exe	102
PID 1480 wrote to memory of 2516	1480	csrsll.exe	102
PID 1480 wrote to memory of 2516	1480	csrsll.exe	102
PID 1480 wrote to memory of 2516	1480	csrsll.exe	102
PID 1480 wrote to memory of 2516	1480	csrsll.exe	102
PID 1480 wrote to memory of 2516	1480	csrsll.exe	102
PID 1480 wrote to memory of 2516	1480	csrsll.exe	102
PID 1480 wrote to memory of 2516	1480	csrsll.exe	102

C:\Users\Admin\AppData\Local\Temp\c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe
"C:\Users\Admin\AppData\Local\Temp\c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5032
- C:\Users\Admin\AppData\Local\Temp\c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe
  "C:\Users\Admin\AppData\Local\Temp\c195b85bef82786b8092fa93fbac96d3e62257a7f7a78e23cf13a75f48eb973eN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2756
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BOESO.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2736
  - - 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:4092
- - 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:1480
  - - 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:4368
  - - 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:2516

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

Query Registry

T1012

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\BOESO.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
7cfbc6a423f0630932ebdb79033ba0a7

SHA1
e44f986b78679dcd70d4742102a4e5236d4b3eef

SHA256
591b560af74100abaec2e042cc98b8b10854c27e5dd24259ac14c613dffa2279

SHA512
645ba8f5f4ce776525715ca5555be2f2ec914f61374aa108693deefb874c94bb73fbc13859a58fb8e882fbd39b4e1f6c9a802846f159a3bdb035265b3f97a682

Download Submit
memory/1480-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1480-59-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1480-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1480-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2516-64-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2516-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2516-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2516-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2516-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2756-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2756-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2756-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2756-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2756-60-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/2756-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4368-63-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5032-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5032-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5032-6-0x0000000002B80000-0x0000000002B82000-memory.dmp

Filesize
8KB

Download
memory/5032-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5032-5-0x0000000002B70000-0x0000000002B72000-memory.dmp

Filesize
8KB

Download
memory/5032-3-0x0000000002B50000-0x0000000002B52000-memory.dmp

Filesize
8KB

Download