modiloader | 0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198c

Analysis

max time kernel
120s
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
26-12-2024 20:36

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General

Target

0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198cN.exe
Size

300KB
MD5

9e71758bf28bddfd59ed34843f0d6740
SHA1

d934704c3f4137751938ef9a8de8bbebfcbb7573
SHA256

0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198c
SHA512

43acbe6659daf882962fce7b730a1e378efb00f8c603bd8370b998c68e17088fefc01c804aa429292ed56736ed8db878db829e0848e59469f535c8b72c61232f
SSDEEP

3072:Ue2A0wxDqUpM5scww4chO+O1BmP5DG0sg3i4XZ9WvDZHwdRX/L+gP38GZ:UsxD5cwohO+O1sVG0/pZ6iPC8n

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/1524-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1524-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1524-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1524-59-0x0000000000400000-0x0000000000414000-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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198cN.exe

Executes dropped EXE 3 IoCs

pid	Process
1996	csrsll.exe
1088	csrsll.exe
1524	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-1-5-21-940901362-3608833189-1915618603-1000\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 1700 set thread context of 3976	1700	0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198cN.exe	88
PID 1996 set thread context of 1088	1996	csrsll.exe	101
PID 1996 set thread context of 1524	1996	csrsll.exe	102

UPX packed file 13 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3976-6-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3976-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3976-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3976-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3976-37-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1524-48-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1524-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3976-57-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1524-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1524-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1524-42-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1088-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1524-59-0x0000000000400000-0x0000000000414000-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	0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198cN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198cN.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe
Token: SeDebugPrivilege	1088	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1700	0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198cN.exe
3976	0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198cN.exe
1996	csrsll.exe
1088	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1700 wrote to memory of 3976	1700	0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198cN.exe	88
PID 1700 wrote to memory of 3976	1700	0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198cN.exe	88
PID 1700 wrote to memory of 3976	1700	0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198cN.exe	88
PID 1700 wrote to memory of 3976	1700	0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198cN.exe	88
PID 1700 wrote to memory of 3976	1700	0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198cN.exe	88
PID 1700 wrote to memory of 3976	1700	0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198cN.exe	88
PID 1700 wrote to memory of 3976	1700	0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198cN.exe	88
PID 1700 wrote to memory of 3976	1700	0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198cN.exe	88
PID 3976 wrote to memory of 2484	3976	0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198cN.exe	91
PID 3976 wrote to memory of 2484	3976	0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198cN.exe	91
PID 3976 wrote to memory of 2484	3976	0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198cN.exe	91
PID 2484 wrote to memory of 3532	2484	cmd.exe	95
PID 2484 wrote to memory of 3532	2484	cmd.exe	95
PID 2484 wrote to memory of 3532	2484	cmd.exe	95
PID 3976 wrote to memory of 1996	3976	0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198cN.exe	96
PID 3976 wrote to memory of 1996	3976	0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198cN.exe	96
PID 3976 wrote to memory of 1996	3976	0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198cN.exe	96
PID 1996 wrote to memory of 1088	1996	csrsll.exe	101
PID 1996 wrote to memory of 1088	1996	csrsll.exe	101
PID 1996 wrote to memory of 1088	1996	csrsll.exe	101
PID 1996 wrote to memory of 1088	1996	csrsll.exe	101
PID 1996 wrote to memory of 1088	1996	csrsll.exe	101
PID 1996 wrote to memory of 1088	1996	csrsll.exe	101
PID 1996 wrote to memory of 1088	1996	csrsll.exe	101
PID 1996 wrote to memory of 1088	1996	csrsll.exe	101
PID 1996 wrote to memory of 1524	1996	csrsll.exe	102
PID 1996 wrote to memory of 1524	1996	csrsll.exe	102
PID 1996 wrote to memory of 1524	1996	csrsll.exe	102
PID 1996 wrote to memory of 1524	1996	csrsll.exe	102
PID 1996 wrote to memory of 1524	1996	csrsll.exe	102
PID 1996 wrote to memory of 1524	1996	csrsll.exe	102
PID 1996 wrote to memory of 1524	1996	csrsll.exe	102
PID 1996 wrote to memory of 1524	1996	csrsll.exe	102

C:\Users\Admin\AppData\Local\Temp\0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198cN.exe
"C:\Users\Admin\AppData\Local\Temp\0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198cN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1700
- C:\Users\Admin\AppData\Local\Temp\0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198cN.exe
  "C:\Users\Admin\AppData\Local\Temp\0cf66a1b4d0a0e6280f63c9e6e7530c7419a14a8de5dda8db367d4fde24b198cN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3976
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\MLYFO.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2484
  - - 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:3532
- - 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:1996
  - - 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:1088
  - - 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:1524

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\MLYFO.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
300KB

MD5
8542dd6e86572e9178e0def597860f7d

SHA1
24f786d46a56fb77cb629cee878979f319d3eda4

SHA256
13747e827cb0bf6594f237022cb968e5bdbc099246a38e0ccae0a4f5194eda27

SHA512
afd1f04b51c1e365b5dd77f79629bbbffadfe120cee2ff988f668e49ac7d1fbd3a0e050210654c68fa31501ddcce7438545e5356f1cb727a2a890ac9a93f1e6a

Download Submit
memory/1088-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1524-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1524-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1524-42-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1524-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1524-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1524-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1700-0-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1700-5-0x0000000002B80000-0x0000000002B82000-memory.dmp

Filesize
8KB

Download
memory/1700-4-0x0000000002A50000-0x0000000002A52000-memory.dmp

Filesize
8KB

Download
memory/1700-3-0x0000000002A40000-0x0000000002A42000-memory.dmp

Filesize
8KB

Download
memory/1996-38-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1996-39-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1996-54-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/3976-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3976-57-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3976-37-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3976-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3976-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3976-6-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads