modiloader | 810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55

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
17/01/2025, 06:38

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe
Size

300KB
MD5

99e5c2b22d8b2145d9e4d30313271ef0
SHA1

6ad1cd05ca8917c3c29c89c6acb7d7689a701a53
SHA256

810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55
SHA512

7987554f55c8f063087ffcdfba9d5fe876e833496213047d592518e20878acf3310a183496628794c000d3e81bca2839eaa52982e75a161ad13bfd9bf80f782c
SSDEEP

3072:Ue2A0wxDqUpM5scww4chO+O1BmP5DG0sg3i4XZ9WvDZHwdRX/L+gP38G1: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/760-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/760-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/760-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/760-59-0x0000000000400000-0x0000000000414000-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	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe

Executes dropped EXE 3 IoCs

pid	Process
4224	csrsll.exe
1708	csrsll.exe
760	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 1276 set thread context of 4968	1276	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	83
PID 4224 set thread context of 1708	4224	csrsll.exe	96
PID 4224 set thread context of 760	4224	csrsll.exe	97

UPX packed file 12 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4968-6-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4968-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4968-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4968-37-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/760-43-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/760-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/760-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4968-57-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/760-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/760-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1708-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/760-59-0x0000000000400000-0x0000000000414000-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	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1276	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe
4968	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe
4224	csrsll.exe
1708	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1276 wrote to memory of 4968	1276	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	83
PID 1276 wrote to memory of 4968	1276	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	83
PID 1276 wrote to memory of 4968	1276	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	83
PID 1276 wrote to memory of 4968	1276	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	83
PID 1276 wrote to memory of 4968	1276	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	83
PID 1276 wrote to memory of 4968	1276	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	83
PID 1276 wrote to memory of 4968	1276	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	83
PID 1276 wrote to memory of 4968	1276	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	83
PID 4968 wrote to memory of 1848	4968	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	84
PID 4968 wrote to memory of 1848	4968	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	84
PID 4968 wrote to memory of 1848	4968	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	84
PID 1848 wrote to memory of 1532	1848	cmd.exe	88
PID 1848 wrote to memory of 1532	1848	cmd.exe	88
PID 1848 wrote to memory of 1532	1848	cmd.exe	88
PID 4968 wrote to memory of 4224	4968	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	89
PID 4968 wrote to memory of 4224	4968	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	89
PID 4968 wrote to memory of 4224	4968	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	89
PID 4224 wrote to memory of 1708	4224	csrsll.exe	96
PID 4224 wrote to memory of 1708	4224	csrsll.exe	96
PID 4224 wrote to memory of 1708	4224	csrsll.exe	96
PID 4224 wrote to memory of 1708	4224	csrsll.exe	96
PID 4224 wrote to memory of 1708	4224	csrsll.exe	96
PID 4224 wrote to memory of 1708	4224	csrsll.exe	96
PID 4224 wrote to memory of 1708	4224	csrsll.exe	96
PID 4224 wrote to memory of 1708	4224	csrsll.exe	96
PID 4224 wrote to memory of 760	4224	csrsll.exe	97
PID 4224 wrote to memory of 760	4224	csrsll.exe	97
PID 4224 wrote to memory of 760	4224	csrsll.exe	97
PID 4224 wrote to memory of 760	4224	csrsll.exe	97
PID 4224 wrote to memory of 760	4224	csrsll.exe	97
PID 4224 wrote to memory of 760	4224	csrsll.exe	97
PID 4224 wrote to memory of 760	4224	csrsll.exe	97
PID 4224 wrote to memory of 760	4224	csrsll.exe	97

C:\Users\Admin\AppData\Local\Temp\810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe
"C:\Users\Admin\AppData\Local\Temp\810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1276
- C:\Users\Admin\AppData\Local\Temp\810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe
  "C:\Users\Admin\AppData\Local\Temp\810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4968
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FETUS.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1848
  - - 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:1532
- - 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:4224
  - - 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:1708
  - - 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:760

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\FETUS.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
300KB

MD5
8de0b12a65a6d55f76a69401f6e6a7dc

SHA1
932438b3cf2f75323413a80f50405c5bd2042608

SHA256
2c858f8adc3d74d424f1ee8f115b19726576f85c1fb1bb03528266a7180c7592

SHA512
c9cc8f7956eb6fe01f38114d2a829a2967e7f968de7faf55ae625cdd538c45ed886a6b78ccdc85295ec7cdf77dc36d326462eae4bf44102b941a5a2a31f0a014

Download Submit
memory/760-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/760-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/760-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/760-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/760-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/760-43-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1276-5-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/1276-4-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/1276-3-0x00000000022E0000-0x00000000022E2000-memory.dmp

Filesize
8KB

Download
memory/1276-0-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1708-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4224-54-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/4224-39-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/4224-38-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/4968-57-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4968-37-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4968-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4968-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4968-6-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads