modiloader | 4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31

Analysis

max time kernel
119s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
12-01-2025 10:04

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General

Target

4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31.exe
Size

90KB
MD5

8491969f71c6d327e4ec36c664d38b5f
SHA1

dec29db0d661b2167b7de21f3e2fddaae749d084
SHA256

4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31
SHA512

ae131394193e2464c546a2dba4b3ae66a9cecbd56e48af85712f4e2a984ed608ffd385051b8a8aeeaccb14731271d22fd2387b631a00b04349a9a32891129605
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oD9:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3L

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/3948-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3948-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3948-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3948-63-0x0000000000400000-0x0000000000414000-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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31.exe

Executes dropped EXE 3 IoCs

pid	Process
4192	csrsll.exe
3088	csrsll.exe
3948	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-1-5-21-2878641211-696417878-3864914810-1000\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 1080 set thread context of 1396	1080	4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31.exe	83
PID 4192 set thread context of 3088	4192	csrsll.exe	95
PID 4192 set thread context of 3948	4192	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1080-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1080-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1396-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1396-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1396-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1080-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0032000000023b5b-29.dat	upx
behavioral2/memory/1396-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4192-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4192-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3948-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3948-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3948-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3948-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3948-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4192-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1396-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3088-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3948-63-0x0000000000400000-0x0000000000414000-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	4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe
Token: SeDebugPrivilege	3088	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1080	4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31.exe
1396	4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31.exe
4192	csrsll.exe
3088	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1080 wrote to memory of 1396	1080	4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31.exe	83
PID 1080 wrote to memory of 1396	1080	4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31.exe	83
PID 1080 wrote to memory of 1396	1080	4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31.exe	83
PID 1080 wrote to memory of 1396	1080	4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31.exe	83
PID 1080 wrote to memory of 1396	1080	4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31.exe	83
PID 1080 wrote to memory of 1396	1080	4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31.exe	83
PID 1080 wrote to memory of 1396	1080	4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31.exe	83
PID 1080 wrote to memory of 1396	1080	4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31.exe	83
PID 1396 wrote to memory of 1828	1396	4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31.exe	84
PID 1396 wrote to memory of 1828	1396	4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31.exe	84
PID 1396 wrote to memory of 1828	1396	4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31.exe	84
PID 1828 wrote to memory of 1432	1828	cmd.exe	88
PID 1828 wrote to memory of 1432	1828	cmd.exe	88
PID 1828 wrote to memory of 1432	1828	cmd.exe	88
PID 1396 wrote to memory of 4192	1396	4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31.exe	89
PID 1396 wrote to memory of 4192	1396	4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31.exe	89
PID 1396 wrote to memory of 4192	1396	4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31.exe	89
PID 4192 wrote to memory of 3088	4192	csrsll.exe	95
PID 4192 wrote to memory of 3088	4192	csrsll.exe	95
PID 4192 wrote to memory of 3088	4192	csrsll.exe	95
PID 4192 wrote to memory of 3088	4192	csrsll.exe	95
PID 4192 wrote to memory of 3088	4192	csrsll.exe	95
PID 4192 wrote to memory of 3088	4192	csrsll.exe	95
PID 4192 wrote to memory of 3088	4192	csrsll.exe	95
PID 4192 wrote to memory of 3088	4192	csrsll.exe	95
PID 4192 wrote to memory of 3948	4192	csrsll.exe	96
PID 4192 wrote to memory of 3948	4192	csrsll.exe	96
PID 4192 wrote to memory of 3948	4192	csrsll.exe	96
PID 4192 wrote to memory of 3948	4192	csrsll.exe	96
PID 4192 wrote to memory of 3948	4192	csrsll.exe	96
PID 4192 wrote to memory of 3948	4192	csrsll.exe	96
PID 4192 wrote to memory of 3948	4192	csrsll.exe	96
PID 4192 wrote to memory of 3948	4192	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31.exe
"C:\Users\Admin\AppData\Local\Temp\4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1080
- C:\Users\Admin\AppData\Local\Temp\4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31.exe
  "C:\Users\Admin\AppData\Local\Temp\4b08208df06c05c979e1f6dcc37405c525de858cc1d3c5d85b97ffe9ea50bf31.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1396
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FKYAY.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1828
  - - 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:1432
- - 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:4192
  - - 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:3088
  - - 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:3948

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\FKYAY.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
b210027b2210a810937f9f3aa2082427

SHA1
e44e446cb5b71b8e43238c55315c9dbebab40537

SHA256
111b83a051fa162d7bc4515b442a32cb75eeb82dda65352fc29c45c8b7ee844d

SHA512
e5b0d41747cfb26b1c35bce9b79a0ac9081c7c911fc701c3cb80bb251c588f3ee826870967e86ac4565511cc239bdc403fce32ea2ca6b20ae482b525430d1db9

Download Submit
memory/1080-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1080-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1080-6-0x0000000002440000-0x0000000002442000-memory.dmp

Filesize
8KB

Download
memory/1080-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1080-4-0x0000000002420000-0x0000000002422000-memory.dmp

Filesize
8KB

Download
memory/1080-3-0x0000000002410000-0x0000000002412000-memory.dmp

Filesize
8KB

Download
memory/1396-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1396-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1396-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1396-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1396-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1396-59-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/3088-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3948-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3948-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3948-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3948-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3948-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3948-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4192-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4192-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4192-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads