modiloader | bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
24-12-2024 01:14

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General

Target

bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe
Size

90KB
MD5

6f95d6df03c782b20af78ca116751266
SHA1

74048f210a4664c9bb5fda2310f62799c5d2fbdf
SHA256

bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5
SHA512

4ed531c5a1a2d7655118420d58f8cd004b3ed41b8fc7f029b174abd00c73f347b9a60cb49662f91a70aa0df0ed4a8f923aff2dc6f800bf8c4798d060d03bff11
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDN:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE37

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/4724-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4724-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4724-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4724-61-0x0000000000400000-0x0000000000414000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe

Executes dropped EXE 3 IoCs

pid	Process
2012	csrsll.exe
996	csrsll.exe
4724	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-1-5-21-2045521122-590294423-3465680274-1000\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 4316 set thread context of 4616	4316	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	92
PID 2012 set thread context of 996	2012	csrsll.exe	102
PID 2012 set thread context of 4724	2012	csrsll.exe	103

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4316-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4316-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4616-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4616-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4316-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4616-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023cb6-29.dat	upx
behavioral2/memory/4616-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2012-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2012-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4724-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4724-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4724-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4724-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2012-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4724-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4616-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/996-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4724-61-0x0000000000400000-0x0000000000414000-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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.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	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe
Token: SeDebugPrivilege	996	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4316	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe
4616	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe
2012	csrsll.exe
996	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4316 wrote to memory of 4616	4316	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	92
PID 4316 wrote to memory of 4616	4316	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	92
PID 4316 wrote to memory of 4616	4316	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	92
PID 4316 wrote to memory of 4616	4316	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	92
PID 4316 wrote to memory of 4616	4316	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	92
PID 4316 wrote to memory of 4616	4316	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	92
PID 4316 wrote to memory of 4616	4316	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	92
PID 4316 wrote to memory of 4616	4316	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	92
PID 4616 wrote to memory of 2248	4616	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	93
PID 4616 wrote to memory of 2248	4616	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	93
PID 4616 wrote to memory of 2248	4616	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	93
PID 2248 wrote to memory of 1164	2248	cmd.exe	97
PID 2248 wrote to memory of 1164	2248	cmd.exe	97
PID 2248 wrote to memory of 1164	2248	cmd.exe	97
PID 4616 wrote to memory of 2012	4616	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	99
PID 4616 wrote to memory of 2012	4616	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	99
PID 4616 wrote to memory of 2012	4616	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	99
PID 2012 wrote to memory of 996	2012	csrsll.exe	102
PID 2012 wrote to memory of 996	2012	csrsll.exe	102
PID 2012 wrote to memory of 996	2012	csrsll.exe	102
PID 2012 wrote to memory of 996	2012	csrsll.exe	102
PID 2012 wrote to memory of 996	2012	csrsll.exe	102
PID 2012 wrote to memory of 996	2012	csrsll.exe	102
PID 2012 wrote to memory of 996	2012	csrsll.exe	102
PID 2012 wrote to memory of 996	2012	csrsll.exe	102
PID 2012 wrote to memory of 4724	2012	csrsll.exe	103
PID 2012 wrote to memory of 4724	2012	csrsll.exe	103
PID 2012 wrote to memory of 4724	2012	csrsll.exe	103
PID 2012 wrote to memory of 4724	2012	csrsll.exe	103
PID 2012 wrote to memory of 4724	2012	csrsll.exe	103
PID 2012 wrote to memory of 4724	2012	csrsll.exe	103
PID 2012 wrote to memory of 4724	2012	csrsll.exe	103
PID 2012 wrote to memory of 4724	2012	csrsll.exe	103

C:\Users\Admin\AppData\Local\Temp\bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe
"C:\Users\Admin\AppData\Local\Temp\bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4316
- C:\Users\Admin\AppData\Local\Temp\bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe
  "C:\Users\Admin\AppData\Local\Temp\bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4616
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\AEHTU.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2248
  - - 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:1164
- - 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:2012
  - - 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:996
  - - 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:4724

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\AEHTU.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
39304e5192a4783c30b27031bd8e3f4b

SHA1
6031996446b21ffd0ed6e11cfa643df64f6a9bbc

SHA256
a88ecb5dbe72ce1c6e37366e4ddabc97271b231c3af887622c3647748622845d

SHA512
66c13e82a454cab0b9d9ef2443fb2d5c608598adf6afe3ab747bc8de980f686c97b0934acb4ebc644810cf224051555ff909634d39c895275ec8ee6593630142

Download Submit
memory/996-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2012-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2012-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2012-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4316-3-0x00000000022E0000-0x00000000022E2000-memory.dmp

Filesize
8KB

Download
memory/4316-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4316-6-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/4316-5-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/4316-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4316-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4616-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4616-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4616-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4616-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4616-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4724-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4724-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4724-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4724-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4724-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4724-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads