modiloader | 4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aa

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, 12:20

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aaN.exe
Size

90KB
MD5

20b8ae80b152181549132a0e23f6a580
SHA1

8365958bd7f9d942ef6e6242c720e3f08eb85982
SHA256

4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aa
SHA512

f869dacdc27f0a811aa18324aedf3b13f94a40dd0331350689028b1a914e7af6dee58b3e59ddb683760ff329b0c0245470c686cc301316223087db58cb14f9f3
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDK:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3Y

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/3524-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3524-60-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3524-59-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3524-65-0x0000000000400000-0x0000000000414000-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	4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aaN.exe

Executes dropped EXE 3 IoCs

pid	Process
2164	csrsll.exe
4340	csrsll.exe
3524	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 4492 set thread context of 2204	4492	4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aaN.exe	92
PID 2164 set thread context of 4340	2164	csrsll.exe	100
PID 2164 set thread context of 3524	2164	csrsll.exe	101

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4492-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4492-3-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2204-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2204-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2204-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4492-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000e000000023b2b-30.dat	upx
behavioral2/memory/2164-38-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2204-41-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2164-44-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2164-43-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3524-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3524-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3524-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3524-60-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2164-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3524-59-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2204-63-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4340-64-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3524-65-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aaN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aaN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe
Token: SeDebugPrivilege	4340	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4492	4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aaN.exe
2204	4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aaN.exe
2164	csrsll.exe
4340	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4492 wrote to memory of 2204	4492	4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aaN.exe	92
PID 4492 wrote to memory of 2204	4492	4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aaN.exe	92
PID 4492 wrote to memory of 2204	4492	4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aaN.exe	92
PID 4492 wrote to memory of 2204	4492	4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aaN.exe	92
PID 4492 wrote to memory of 2204	4492	4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aaN.exe	92
PID 4492 wrote to memory of 2204	4492	4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aaN.exe	92
PID 4492 wrote to memory of 2204	4492	4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aaN.exe	92
PID 4492 wrote to memory of 2204	4492	4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aaN.exe	92
PID 2204 wrote to memory of 3276	2204	4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aaN.exe	93
PID 2204 wrote to memory of 3276	2204	4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aaN.exe	93
PID 2204 wrote to memory of 3276	2204	4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aaN.exe	93
PID 3276 wrote to memory of 684	3276	cmd.exe	98
PID 3276 wrote to memory of 684	3276	cmd.exe	98
PID 3276 wrote to memory of 684	3276	cmd.exe	98
PID 2204 wrote to memory of 2164	2204	4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aaN.exe	99
PID 2204 wrote to memory of 2164	2204	4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aaN.exe	99
PID 2204 wrote to memory of 2164	2204	4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aaN.exe	99
PID 2164 wrote to memory of 4340	2164	csrsll.exe	100
PID 2164 wrote to memory of 4340	2164	csrsll.exe	100
PID 2164 wrote to memory of 4340	2164	csrsll.exe	100
PID 2164 wrote to memory of 4340	2164	csrsll.exe	100
PID 2164 wrote to memory of 4340	2164	csrsll.exe	100
PID 2164 wrote to memory of 4340	2164	csrsll.exe	100
PID 2164 wrote to memory of 4340	2164	csrsll.exe	100
PID 2164 wrote to memory of 4340	2164	csrsll.exe	100
PID 2164 wrote to memory of 3524	2164	csrsll.exe	101
PID 2164 wrote to memory of 3524	2164	csrsll.exe	101
PID 2164 wrote to memory of 3524	2164	csrsll.exe	101
PID 2164 wrote to memory of 3524	2164	csrsll.exe	101
PID 2164 wrote to memory of 3524	2164	csrsll.exe	101
PID 2164 wrote to memory of 3524	2164	csrsll.exe	101
PID 2164 wrote to memory of 3524	2164	csrsll.exe	101
PID 2164 wrote to memory of 3524	2164	csrsll.exe	101

C:\Users\Admin\AppData\Local\Temp\4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aaN.exe
"C:\Users\Admin\AppData\Local\Temp\4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aaN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4492
- C:\Users\Admin\AppData\Local\Temp\4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aaN.exe
  "C:\Users\Admin\AppData\Local\Temp\4379b3f395e512a526776d232fdfd4316637072a06bd425376cfb19acfa4f2aaN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2204
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BEUQR.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3276
  - - 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:684
- - 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:2164
  - - 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:4340
  - - 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:3524

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\BEUQR.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
b7eeb197172e6e7823563375485b174e

SHA1
4cc6d0d6dd93052c4385bb43ac39bc0ab7f312d0

SHA256
05e7c50a5c5e75256ff0e458d18ce7324d813c4f9b3c54e32a1de68ffdaaff9e

SHA512
36a81b8d0812d6222369138d8b37b09cd49e34dae29fd7917da863be840aa40e29b1df166267f14e3afd266dc7d1090addfaf49af951f29a5fa08b8e0854e66d

Download Submit
memory/2164-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2164-43-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2164-44-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2164-38-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2204-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2204-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2204-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2204-63-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2204-41-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3524-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3524-65-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3524-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3524-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3524-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3524-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4340-64-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4492-5-0x00000000021C0000-0x00000000021C2000-memory.dmp

Filesize
8KB

Download
memory/4492-4-0x00000000021B0000-0x00000000021B2000-memory.dmp

Filesize
8KB

Download
memory/4492-3-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4492-7-0x00000000021E0000-0x00000000021E2000-memory.dmp

Filesize
8KB

Download
memory/4492-6-0x00000000021D0000-0x00000000021D2000-memory.dmp

Filesize
8KB

Download
memory/4492-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4492-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads