modiloader | 856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23

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
05/12/2024, 21:50

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23N.exe
Size

90KB
MD5

858dc425100f439d8fe88620b4859580
SHA1

f390369e38ae18b8759a62f4b42bfe73b8e66484
SHA256

856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23
SHA512

2447d3345371dff72ce05a7eec02ca6a67decbc16658bbbef8b9332e53b5e98529d8487135486f23a82a331e401c232392390c88dfb0919b69f8791ccb2ffa49
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 4 IoCs

resource	yara_rule
behavioral2/memory/4476-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4476-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4476-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4476-63-0x0000000000400000-0x0000000000414000-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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23N.exe

Executes dropped EXE 3 IoCs

pid	Process
3636	csrsll.exe
228	csrsll.exe
4476	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-1-5-21-2437139445-1151884604-3026847218-1000\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 3960 set thread context of 3652	3960	856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23N.exe	89
PID 3636 set thread context of 228	3636	csrsll.exe	101
PID 3636 set thread context of 4476	3636	csrsll.exe	102

UPX packed file 21 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3960-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3960-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3652-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3652-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3960-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3652-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3652-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000b000000023b9a-29.dat	upx
behavioral2/memory/3636-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3652-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3636-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3636-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4476-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4476-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4476-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4476-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4476-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3636-59-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3652-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/228-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4476-63-0x0000000000400000-0x0000000000414000-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	856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23N.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe
Token: SeDebugPrivilege	228	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3960	856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23N.exe
3652	856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23N.exe
3636	csrsll.exe
228	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3960 wrote to memory of 3652	3960	856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23N.exe	89
PID 3960 wrote to memory of 3652	3960	856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23N.exe	89
PID 3960 wrote to memory of 3652	3960	856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23N.exe	89
PID 3960 wrote to memory of 3652	3960	856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23N.exe	89
PID 3960 wrote to memory of 3652	3960	856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23N.exe	89
PID 3960 wrote to memory of 3652	3960	856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23N.exe	89
PID 3960 wrote to memory of 3652	3960	856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23N.exe	89
PID 3960 wrote to memory of 3652	3960	856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23N.exe	89
PID 3652 wrote to memory of 3588	3652	856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23N.exe	92
PID 3652 wrote to memory of 3588	3652	856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23N.exe	92
PID 3652 wrote to memory of 3588	3652	856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23N.exe	92
PID 3588 wrote to memory of 5080	3588	cmd.exe	96
PID 3588 wrote to memory of 5080	3588	cmd.exe	96
PID 3588 wrote to memory of 5080	3588	cmd.exe	96
PID 3652 wrote to memory of 3636	3652	856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23N.exe	97
PID 3652 wrote to memory of 3636	3652	856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23N.exe	97
PID 3652 wrote to memory of 3636	3652	856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23N.exe	97
PID 3636 wrote to memory of 228	3636	csrsll.exe	101
PID 3636 wrote to memory of 228	3636	csrsll.exe	101
PID 3636 wrote to memory of 228	3636	csrsll.exe	101
PID 3636 wrote to memory of 228	3636	csrsll.exe	101
PID 3636 wrote to memory of 228	3636	csrsll.exe	101
PID 3636 wrote to memory of 228	3636	csrsll.exe	101
PID 3636 wrote to memory of 228	3636	csrsll.exe	101
PID 3636 wrote to memory of 228	3636	csrsll.exe	101
PID 3636 wrote to memory of 4476	3636	csrsll.exe	102
PID 3636 wrote to memory of 4476	3636	csrsll.exe	102
PID 3636 wrote to memory of 4476	3636	csrsll.exe	102
PID 3636 wrote to memory of 4476	3636	csrsll.exe	102
PID 3636 wrote to memory of 4476	3636	csrsll.exe	102
PID 3636 wrote to memory of 4476	3636	csrsll.exe	102
PID 3636 wrote to memory of 4476	3636	csrsll.exe	102
PID 3636 wrote to memory of 4476	3636	csrsll.exe	102

C:\Users\Admin\AppData\Local\Temp\856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23N.exe
"C:\Users\Admin\AppData\Local\Temp\856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3960
- C:\Users\Admin\AppData\Local\Temp\856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23N.exe
  "C:\Users\Admin\AppData\Local\Temp\856f94ae18e9669995a359a9daf2e0d37be629365af85cd45c23e4b9a968ac23N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3652
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\YLBPL.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3588
  - - 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:5080
- - 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:3636
  - - 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:228
  - - 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:4476

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

Loading Replay Monitor...

Downloads

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

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
05b56a3b537b0592c721cd69c84cc5e4

SHA1
d63a9ff0ae2b3781ee5ed94adcf90916003a611e

SHA256
765d575b3d5fb6b3f12921f22cea639ea90b6ab2662f380f79828cda4e57e6b6

SHA512
84de2893dbc013cd2f2736d2bb5bb4c170d70cc7f921a3f41d6fc2f0726a892057164816f2f6dc4c9a601c8e909c1154b32de179b86bb261688b88ecbce7c8d3

Download Submit
memory/228-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3636-59-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3636-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3636-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3636-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3652-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3652-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3652-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3652-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3652-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3652-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3652-60-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/3960-4-0x0000000002C80000-0x0000000002C82000-memory.dmp

Filesize
8KB

Download
memory/3960-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3960-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3960-6-0x0000000002CA0000-0x0000000002CA2000-memory.dmp

Filesize
8KB

Download
memory/3960-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3960-3-0x0000000002B70000-0x0000000002B72000-memory.dmp

Filesize
8KB

Download
memory/4476-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4476-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4476-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4476-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4476-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4476-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads