modiloader | f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
25-12-2024 18:50

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5.exe
Size

300KB
MD5

b46e42876c90eb41514d91ae51271d50
SHA1

e7e6ff1c5a9db828488349f3e3bc3ce7f118dfb7
SHA256

f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5
SHA512

8f94ebb4d57a1975b19d7b90c8965a583331c1e28547deac5f09a588ed386c9c5dfa1d8b9fa630a411e5cad4853ce6f5fdac26630cac8693e531c228d966912b
SSDEEP

3072:Ue2A0wxDqUpM5scww4chO+O1BmP5DG0sg3i4XZ9WvDZHwdRX/L+gP38GR:UsxD5cwohO+O1sVG0/pZ6iPC8v

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/3916-49-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3916-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3916-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3916-58-0x0000000000400000-0x0000000000414000-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	f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5.exe

Executes dropped EXE 3 IoCs

pid	Process
3656	csrsll.exe
2948	csrsll.exe
3916	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 964 set thread context of 2828	964	f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5.exe	83
PID 3656 set thread context of 2948	3656	csrsll.exe	90
PID 3656 set thread context of 3916	3656	csrsll.exe	91

UPX packed file 12 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2828-6-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2828-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2828-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2828-37-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3916-48-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3916-42-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3916-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3916-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3916-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2828-55-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2948-57-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3916-58-0x0000000000400000-0x0000000000414000-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	f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe
Token: SeDebugPrivilege	2948	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
964	f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5.exe
2828	f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5.exe
3656	csrsll.exe
2948	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 964 wrote to memory of 2828	964	f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5.exe	83
PID 964 wrote to memory of 2828	964	f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5.exe	83
PID 964 wrote to memory of 2828	964	f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5.exe	83
PID 964 wrote to memory of 2828	964	f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5.exe	83
PID 964 wrote to memory of 2828	964	f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5.exe	83
PID 964 wrote to memory of 2828	964	f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5.exe	83
PID 964 wrote to memory of 2828	964	f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5.exe	83
PID 964 wrote to memory of 2828	964	f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5.exe	83
PID 2828 wrote to memory of 4300	2828	f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5.exe	84
PID 2828 wrote to memory of 4300	2828	f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5.exe	84
PID 2828 wrote to memory of 4300	2828	f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5.exe	84
PID 4300 wrote to memory of 2184	4300	cmd.exe	88
PID 4300 wrote to memory of 2184	4300	cmd.exe	88
PID 4300 wrote to memory of 2184	4300	cmd.exe	88
PID 2828 wrote to memory of 3656	2828	f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5.exe	89
PID 2828 wrote to memory of 3656	2828	f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5.exe	89
PID 2828 wrote to memory of 3656	2828	f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5.exe	89
PID 3656 wrote to memory of 2948	3656	csrsll.exe	90
PID 3656 wrote to memory of 2948	3656	csrsll.exe	90
PID 3656 wrote to memory of 2948	3656	csrsll.exe	90
PID 3656 wrote to memory of 2948	3656	csrsll.exe	90
PID 3656 wrote to memory of 2948	3656	csrsll.exe	90
PID 3656 wrote to memory of 2948	3656	csrsll.exe	90
PID 3656 wrote to memory of 2948	3656	csrsll.exe	90
PID 3656 wrote to memory of 2948	3656	csrsll.exe	90
PID 3656 wrote to memory of 3916	3656	csrsll.exe	91
PID 3656 wrote to memory of 3916	3656	csrsll.exe	91
PID 3656 wrote to memory of 3916	3656	csrsll.exe	91
PID 3656 wrote to memory of 3916	3656	csrsll.exe	91
PID 3656 wrote to memory of 3916	3656	csrsll.exe	91
PID 3656 wrote to memory of 3916	3656	csrsll.exe	91
PID 3656 wrote to memory of 3916	3656	csrsll.exe	91
PID 3656 wrote to memory of 3916	3656	csrsll.exe	91

C:\Users\Admin\AppData\Local\Temp\f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5.exe
"C:\Users\Admin\AppData\Local\Temp\f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:964
- C:\Users\Admin\AppData\Local\Temp\f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5.exe
  "C:\Users\Admin\AppData\Local\Temp\f9f99bcf9542f1a914be83fb0baa3bb6a8501f266ff6cc675cd0f9cc68e987f5.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2828
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BMROC.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4300
  - - 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:2184
- - 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:3656
  - - 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:2948
  - - 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:3916

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\BMROC.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
300KB

MD5
ae3827878220d0bf2664513930c96e9a

SHA1
abb19e21770c9d98abe5e7d795917ae607be6826

SHA256
5c6af3f1329e86f3b34187d2f8525f4ba1110beaea720d04defafd417bc8831b

SHA512
3a2f49804195fa0b2f1141dcb52aa4cfe9a75a7a389948a9e99204acc2b3f785455c25d741b4b1e507538592bf2f0d4ec3b769e6c7cb3827da67ed15f3ddecee

Download Submit
memory/964-3-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/964-4-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/964-5-0x0000000002330000-0x0000000002332000-memory.dmp

Filesize
8KB

Download
memory/964-0-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2828-37-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2828-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2828-6-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2828-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2828-55-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2948-57-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3656-54-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/3656-38-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/3656-39-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/3916-42-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3916-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3916-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3916-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3916-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3916-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads