modiloader | 3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
07-12-2024 21:49

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General

Target

3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301.exe
Size

90KB
MD5

1556af5adf453ab15c6f91156c17f9df
SHA1

c794cefe2e64f1018258fcf38d1d33e5edbe8b4d
SHA256

3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301
SHA512

ee664a7a13f9ba970bfa0f692a47140fd375c743d0a73bab6b371e289f1068b16fb7dd717f81a66421888cf4c3c972f4f58969cd728df46abe5b36e6083b454c
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDA:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3C

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/2340-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2340-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2340-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2340-62-0x0000000000400000-0x0000000000414000-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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301.exe

Executes dropped EXE 3 IoCs

pid	Process
3040	csrsll.exe
4784	csrsll.exe
2340	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-1-5-21-3350944739-639801879-157714471-1000\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 1820 set thread context of 1196	1820	3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301.exe	87
PID 3040 set thread context of 4784	3040	csrsll.exe	102
PID 3040 set thread context of 2340	3040	csrsll.exe	103

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1820-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1820-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1196-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1196-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1196-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1820-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023c9d-29.dat	upx
behavioral2/memory/1196-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3040-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3040-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2340-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2340-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3040-55-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2340-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2340-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2340-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1196-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4784-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2340-62-0x0000000000400000-0x0000000000414000-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	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	3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe
Token: SeDebugPrivilege	4784	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1820	3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301.exe
1196	3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301.exe
3040	csrsll.exe
4784	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1820 wrote to memory of 1196	1820	3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301.exe	87
PID 1820 wrote to memory of 1196	1820	3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301.exe	87
PID 1820 wrote to memory of 1196	1820	3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301.exe	87
PID 1820 wrote to memory of 1196	1820	3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301.exe	87
PID 1820 wrote to memory of 1196	1820	3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301.exe	87
PID 1820 wrote to memory of 1196	1820	3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301.exe	87
PID 1820 wrote to memory of 1196	1820	3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301.exe	87
PID 1820 wrote to memory of 1196	1820	3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301.exe	87
PID 1196 wrote to memory of 808	1196	3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301.exe	90
PID 1196 wrote to memory of 808	1196	3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301.exe	90
PID 1196 wrote to memory of 808	1196	3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301.exe	90
PID 808 wrote to memory of 4324	808	cmd.exe	94
PID 808 wrote to memory of 4324	808	cmd.exe	94
PID 808 wrote to memory of 4324	808	cmd.exe	94
PID 1196 wrote to memory of 3040	1196	3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301.exe	95
PID 1196 wrote to memory of 3040	1196	3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301.exe	95
PID 1196 wrote to memory of 3040	1196	3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301.exe	95
PID 3040 wrote to memory of 4784	3040	csrsll.exe	102
PID 3040 wrote to memory of 4784	3040	csrsll.exe	102
PID 3040 wrote to memory of 4784	3040	csrsll.exe	102
PID 3040 wrote to memory of 4784	3040	csrsll.exe	102
PID 3040 wrote to memory of 4784	3040	csrsll.exe	102
PID 3040 wrote to memory of 4784	3040	csrsll.exe	102
PID 3040 wrote to memory of 4784	3040	csrsll.exe	102
PID 3040 wrote to memory of 4784	3040	csrsll.exe	102
PID 3040 wrote to memory of 2340	3040	csrsll.exe	103
PID 3040 wrote to memory of 2340	3040	csrsll.exe	103
PID 3040 wrote to memory of 2340	3040	csrsll.exe	103
PID 3040 wrote to memory of 2340	3040	csrsll.exe	103
PID 3040 wrote to memory of 2340	3040	csrsll.exe	103
PID 3040 wrote to memory of 2340	3040	csrsll.exe	103
PID 3040 wrote to memory of 2340	3040	csrsll.exe	103
PID 3040 wrote to memory of 2340	3040	csrsll.exe	103

C:\Users\Admin\AppData\Local\Temp\3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301.exe
"C:\Users\Admin\AppData\Local\Temp\3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1820
- C:\Users\Admin\AppData\Local\Temp\3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301.exe
  "C:\Users\Admin\AppData\Local\Temp\3d641c1f4cd6d02cbced4e653fccb3293ca331d1d5d62b9267b3efdb8552b301.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1196
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BPOBJ.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:808
  - - 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:4324
- - 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:3040
  - - 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:4784
  - - 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:2340

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\BPOBJ.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
235ab330a93a137e3d5052475e49d16c

SHA1
529fc9388d97afa71bfdacfc4dd300879420b7fc

SHA256
90afdfa33a2f273e4ea81678fa28273e5904da61d28ba51159c354ba95020230

SHA512
08c4c047ab87f2d295547cec0eb31cd81f7fecbcbdc392299d6b51dd9c80a205821ba4248b254c1fbf49a1513ab49dfd04659dc06c8a3964d77f112c430a1a7b

Download Submit
memory/1196-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1196-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1196-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1196-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1196-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1820-5-0x0000000002B70000-0x0000000002B72000-memory.dmp

Filesize
8KB

Download
memory/1820-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1820-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1820-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1820-6-0x0000000002B80000-0x0000000002B82000-memory.dmp

Filesize
8KB

Download
memory/1820-3-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/2340-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2340-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2340-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2340-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2340-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2340-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3040-55-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3040-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3040-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4784-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads