modiloader | 003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6

Analysis

max time kernel
119s
max time network
122s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-11-2024 10:58

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General

Target

003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe
Size

326KB
MD5

d08fa43660dfc4e16ccfa026531cbfa0
SHA1

5c0e7ac0231970d7901917e7057f254a8bd7fc8e
SHA256

003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6
SHA512

e496eb2664de96255d874bdea9b74f4753d90b75c782a77f67d3594066df3cce8d5954c92f55b97b8d0cdbd9eca7e508f1892977013d0aaa0be60588366ce918
SSDEEP

3072:h0e2A0wxDqUpM5scww4chO+O1BmP5DG0sg3i4XZ9WvDZHwdRX/L+gP38XV:h0sxD5cwohO+O1sVG0/pZ6iPC8

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

Processes:

resource	yara_rule
behavioral2/memory/2336-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2336-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2336-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2336-61-0x0000000000400000-0x0000000000414000-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

Processes:

003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid	Process
3232	csrsll.exe
2132	csrsll.exe
2336	csrsll.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

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

Processes:

003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.execsrsll.exe

description	pid	Process	procid_target
PID 3280 set thread context of 4268	3280	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	92
PID 3232 set thread context of 2132	3232	csrsll.exe	100
PID 3232 set thread context of 2336	3232	csrsll.exe	101

UPX packed file 20 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/3280-0-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/3280-4-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4268-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4268-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3280-12-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4268-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0012000000023a66-28.dat	upx
behavioral2/memory/3232-35-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4268-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3232-41-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/3232-42-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/2336-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2336-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2336-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2336-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2336-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3232-57-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4268-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2132-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2336-61-0x0000000000400000-0x0000000000414000-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

Processes:

003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.execmd.exereg.execsrsll.execsrsll.execsrsll.exe003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

csrsll.exe

description	pid	Process
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe
Token: SeDebugPrivilege	2132	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.execsrsll.execsrsll.exe

pid	Process
3280	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe
4268	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe
3232	csrsll.exe
2132	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.execmd.execsrsll.exe

description	pid	Process	procid_target
PID 3280 wrote to memory of 4268	3280	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	92
PID 3280 wrote to memory of 4268	3280	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	92
PID 3280 wrote to memory of 4268	3280	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	92
PID 3280 wrote to memory of 4268	3280	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	92
PID 3280 wrote to memory of 4268	3280	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	92
PID 3280 wrote to memory of 4268	3280	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	92
PID 3280 wrote to memory of 4268	3280	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	92
PID 3280 wrote to memory of 4268	3280	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	92
PID 4268 wrote to memory of 3212	4268	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	95
PID 4268 wrote to memory of 3212	4268	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	95
PID 4268 wrote to memory of 3212	4268	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	95
PID 3212 wrote to memory of 1148	3212	cmd.exe	98
PID 3212 wrote to memory of 1148	3212	cmd.exe	98
PID 3212 wrote to memory of 1148	3212	cmd.exe	98
PID 4268 wrote to memory of 3232	4268	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	99
PID 4268 wrote to memory of 3232	4268	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	99
PID 4268 wrote to memory of 3232	4268	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	99
PID 3232 wrote to memory of 2132	3232	csrsll.exe	100
PID 3232 wrote to memory of 2132	3232	csrsll.exe	100
PID 3232 wrote to memory of 2132	3232	csrsll.exe	100
PID 3232 wrote to memory of 2132	3232	csrsll.exe	100
PID 3232 wrote to memory of 2132	3232	csrsll.exe	100
PID 3232 wrote to memory of 2132	3232	csrsll.exe	100
PID 3232 wrote to memory of 2132	3232	csrsll.exe	100
PID 3232 wrote to memory of 2132	3232	csrsll.exe	100
PID 3232 wrote to memory of 2336	3232	csrsll.exe	101
PID 3232 wrote to memory of 2336	3232	csrsll.exe	101
PID 3232 wrote to memory of 2336	3232	csrsll.exe	101
PID 3232 wrote to memory of 2336	3232	csrsll.exe	101
PID 3232 wrote to memory of 2336	3232	csrsll.exe	101
PID 3232 wrote to memory of 2336	3232	csrsll.exe	101
PID 3232 wrote to memory of 2336	3232	csrsll.exe	101
PID 3232 wrote to memory of 2336	3232	csrsll.exe	101

C:\Users\Admin\AppData\Local\Temp\003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe
"C:\Users\Admin\AppData\Local\Temp\003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3280
- C:\Users\Admin\AppData\Local\Temp\003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe
  "C:\Users\Admin\AppData\Local\Temp\003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4268
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FOYWG.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3212
  - - 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:1148
- - 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:3232
  - - 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:2132
  - - 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:2336

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\FOYWG.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
326KB

MD5
c21f542277f93befb0caa775bada463f

SHA1
6f241219ef8949b08ea27d3c347179f628934193

SHA256
60cca6905679173d6d6d638578fbf458725c417c1bf7852eede2a1fe8d1dbda9

SHA512
295414f6c43735d43f401a5a2281992c618e8d172c933326234697ec50ce27a4827209d2dd18a1fc9fa42347538285e11b8973964d7e70df695256cc84018250

Download Submit
memory/2132-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2336-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2336-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2336-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2336-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2336-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2336-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3232-57-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/3232-35-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/3232-41-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/3232-42-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/3280-12-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/3280-0-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/3280-4-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/3280-5-0x00000000021E0000-0x00000000021E2000-memory.dmp

Filesize
8KB

Download
memory/3280-6-0x00000000021D0000-0x00000000021D2000-memory.dmp

Filesize
8KB

Download
memory/3280-3-0x00000000021B0000-0x00000000021B2000-memory.dmp

Filesize
8KB

Download
memory/4268-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4268-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4268-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4268-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4268-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download