modiloader | 33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0

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
02-01-2025 04:46

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General

Target

33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0.exe
Size

90KB
MD5

f351454c39d55de04e6d668dc794876b
SHA1

af0a93e484a74ca240c093d404d85303a8409d12
SHA256

33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0
SHA512

1490451b3553cb71c9cfbfaff51f1d84413fcc5adb173dbfc7f64f6980b46eaaba850dbb3b88bb6d1db2269935488e13d254abc3d03d75a3614393816dd92786
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDy:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3E

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/2612-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2612-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2612-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2612-63-0x0000000000400000-0x0000000000414000-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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0.exe

Executes dropped EXE 3 IoCs

pid	Process
876	csrsll.exe
1684	csrsll.exe
2612	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-1-5-21-3227495264-2217614367-4027411560-1000\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 772 set thread context of 3088	772	33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0.exe	85
PID 876 set thread context of 1684	876	csrsll.exe	94
PID 876 set thread context of 2612	876	csrsll.exe	95

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/772-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/772-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3088-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3088-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3088-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/772-15-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b000000023b38-30.dat	upx
behavioral2/memory/3088-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/876-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/876-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2612-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2612-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2612-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2612-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/876-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2612-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3088-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1684-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2612-63-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
772	33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0.exe
3088	33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0.exe
876	csrsll.exe
1684	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 772 wrote to memory of 3088	772	33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0.exe	85
PID 772 wrote to memory of 3088	772	33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0.exe	85
PID 772 wrote to memory of 3088	772	33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0.exe	85
PID 772 wrote to memory of 3088	772	33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0.exe	85
PID 772 wrote to memory of 3088	772	33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0.exe	85
PID 772 wrote to memory of 3088	772	33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0.exe	85
PID 772 wrote to memory of 3088	772	33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0.exe	85
PID 772 wrote to memory of 3088	772	33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0.exe	85
PID 3088 wrote to memory of 4280	3088	33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0.exe	87
PID 3088 wrote to memory of 4280	3088	33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0.exe	87
PID 3088 wrote to memory of 4280	3088	33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0.exe	87
PID 4280 wrote to memory of 1328	4280	cmd.exe	90
PID 4280 wrote to memory of 1328	4280	cmd.exe	90
PID 4280 wrote to memory of 1328	4280	cmd.exe	90
PID 3088 wrote to memory of 876	3088	33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0.exe	91
PID 3088 wrote to memory of 876	3088	33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0.exe	91
PID 3088 wrote to memory of 876	3088	33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0.exe	91
PID 876 wrote to memory of 1684	876	csrsll.exe	94
PID 876 wrote to memory of 1684	876	csrsll.exe	94
PID 876 wrote to memory of 1684	876	csrsll.exe	94
PID 876 wrote to memory of 1684	876	csrsll.exe	94
PID 876 wrote to memory of 1684	876	csrsll.exe	94
PID 876 wrote to memory of 1684	876	csrsll.exe	94
PID 876 wrote to memory of 1684	876	csrsll.exe	94
PID 876 wrote to memory of 1684	876	csrsll.exe	94
PID 876 wrote to memory of 2612	876	csrsll.exe	95
PID 876 wrote to memory of 2612	876	csrsll.exe	95
PID 876 wrote to memory of 2612	876	csrsll.exe	95
PID 876 wrote to memory of 2612	876	csrsll.exe	95
PID 876 wrote to memory of 2612	876	csrsll.exe	95
PID 876 wrote to memory of 2612	876	csrsll.exe	95
PID 876 wrote to memory of 2612	876	csrsll.exe	95
PID 876 wrote to memory of 2612	876	csrsll.exe	95

C:\Users\Admin\AppData\Local\Temp\33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0.exe
"C:\Users\Admin\AppData\Local\Temp\33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:772
- C:\Users\Admin\AppData\Local\Temp\33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0.exe
  "C:\Users\Admin\AppData\Local\Temp\33bc2ab850f20c30ef8784eb46bf3641e53712fc80762951fe5589e1abe580c0.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3088
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\OMQLT.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4280
  - - 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:1328
- - 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:876
  - - 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:1684
  - - 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:2612

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\OMQLT.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
4f83d358e2aa72729b27451684f875e9

SHA1
6ce5a00828911d53827be071032345fe16b078de

SHA256
0f918bf9f263b454080fad0ea1c3636ff7e94bab4ea523941e663c10aa0a2139

SHA512
783acc689f45f9236be8a5cf75f4c34bcc9eada112dad9ad2b519078df9834c3b259bd25c10c24a9137ebb30e6b0b8e06d0c5ebc4d80abf10428c2f051f70267

Download Submit
memory/772-15-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/772-3-0x0000000002A50000-0x0000000002A52000-memory.dmp

Filesize
8KB

Download
memory/772-4-0x0000000002A60000-0x0000000002A62000-memory.dmp

Filesize
8KB

Download
memory/772-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/772-6-0x0000000002A80000-0x0000000002A82000-memory.dmp

Filesize
8KB

Download
memory/772-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/876-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/876-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/876-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1684-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2612-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2612-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2612-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2612-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2612-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2612-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3088-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3088-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3088-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3088-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3088-59-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/3088-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads