modiloader | 8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c

Analysis

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

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
31-12-2024 00:04

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General

Target

8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c.exe
Size

90KB
MD5

07e32b262f3b9492de8150b4d97f1916
SHA1

4b6aa261ecd0b9dd90c7244baae3faffb98597b8
SHA256

8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c
SHA512

be40340b90e5121c537f2a25aa686dd87ee1cb73775e3815f85eb4b425df4571a7430b8d32f0196cb9ccac7f8ac704f04c7ed76ca0fcd21b06bc3a9a6f0f2461
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDw:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE36

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 4 IoCs

resource	yara_rule
behavioral2/memory/3328-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3328-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3328-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3328-60-0x0000000000400000-0x0000000000414000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c.exe

Executes dropped EXE 3 IoCs

pid	Process
5068	csrsll.exe
4720	csrsll.exe
3328	csrsll.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-1-5-21-3756129449-3121373848-4276368241-1000\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 5004 set thread context of 1340	5004	8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c.exe	82
PID 5068 set thread context of 4720	5068	csrsll.exe	93
PID 5068 set thread context of 3328	5068	csrsll.exe	94

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5004-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5004-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1340-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1340-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5004-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1340-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1340-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023cb4-29.dat	upx
behavioral2/memory/1340-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5068-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5068-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3328-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3328-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3328-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3328-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5068-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3328-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1340-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4720-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3328-60-0x0000000000400000-0x0000000000414000-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	8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c.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	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
5004	8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c.exe
1340	8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c.exe
5068	csrsll.exe
4720	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 5004 wrote to memory of 1340	5004	8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c.exe	82
PID 5004 wrote to memory of 1340	5004	8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c.exe	82
PID 5004 wrote to memory of 1340	5004	8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c.exe	82
PID 5004 wrote to memory of 1340	5004	8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c.exe	82
PID 5004 wrote to memory of 1340	5004	8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c.exe	82
PID 5004 wrote to memory of 1340	5004	8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c.exe	82
PID 5004 wrote to memory of 1340	5004	8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c.exe	82
PID 5004 wrote to memory of 1340	5004	8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c.exe	82
PID 1340 wrote to memory of 3264	1340	8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c.exe	83
PID 1340 wrote to memory of 3264	1340	8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c.exe	83
PID 1340 wrote to memory of 3264	1340	8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c.exe	83
PID 3264 wrote to memory of 1096	3264	cmd.exe	86
PID 3264 wrote to memory of 1096	3264	cmd.exe	86
PID 3264 wrote to memory of 1096	3264	cmd.exe	86
PID 1340 wrote to memory of 5068	1340	8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c.exe	87
PID 1340 wrote to memory of 5068	1340	8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c.exe	87
PID 1340 wrote to memory of 5068	1340	8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c.exe	87
PID 5068 wrote to memory of 4720	5068	csrsll.exe	93
PID 5068 wrote to memory of 4720	5068	csrsll.exe	93
PID 5068 wrote to memory of 4720	5068	csrsll.exe	93
PID 5068 wrote to memory of 4720	5068	csrsll.exe	93
PID 5068 wrote to memory of 4720	5068	csrsll.exe	93
PID 5068 wrote to memory of 4720	5068	csrsll.exe	93
PID 5068 wrote to memory of 4720	5068	csrsll.exe	93
PID 5068 wrote to memory of 4720	5068	csrsll.exe	93
PID 5068 wrote to memory of 3328	5068	csrsll.exe	94
PID 5068 wrote to memory of 3328	5068	csrsll.exe	94
PID 5068 wrote to memory of 3328	5068	csrsll.exe	94
PID 5068 wrote to memory of 3328	5068	csrsll.exe	94
PID 5068 wrote to memory of 3328	5068	csrsll.exe	94
PID 5068 wrote to memory of 3328	5068	csrsll.exe	94
PID 5068 wrote to memory of 3328	5068	csrsll.exe	94
PID 5068 wrote to memory of 3328	5068	csrsll.exe	94

C:\Users\Admin\AppData\Local\Temp\8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c.exe
"C:\Users\Admin\AppData\Local\Temp\8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5004
- C:\Users\Admin\AppData\Local\Temp\8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c.exe
  "C:\Users\Admin\AppData\Local\Temp\8fc01c00c81cdbb5bad064c67da83fca6d63ae7aefaae2bced52facfb4899a2c.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1340
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\KXENW.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3264
  - - 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:1096
- - 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:5068
  - - 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:4720
  - - 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:3328

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\KXENW.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
d26af8b8867a6fb740f9256e4d355ad4

SHA1
0d627ece4e769c63f7395a8e0ae95f626a16e2ca

SHA256
27d3b0d863e52babd3b5b6de41922fb1808d5411e194dbc3a67e7cac2898f997

SHA512
52da824f2a0ecab65c5362d234d2715c69e3f15da2b9c87699e75bc6a87c5e313373b30e3b86fb845e72d0add4fd3de1d00577050115d9b2783f27d41c891938

Download Submit
memory/1340-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1340-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1340-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1340-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1340-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1340-57-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/1340-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3328-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3328-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3328-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3328-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3328-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3328-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4720-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5004-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5004-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/5004-4-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/5004-6-0x0000000002330000-0x0000000002332000-memory.dmp

Filesize
8KB

Download
memory/5004-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5004-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5068-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5068-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5068-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads