modiloader | f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd

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
08-11-2024 06:02

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General

Target

f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exe
Size

90KB
MD5

29ab29c194b3b95460b21252c761e6b0
SHA1

a4dbdb7d9296a86edab3cbc4b20e2e8bd40cea5d
SHA256

f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd
SHA512

befc4c06196dd0ff0a5b0f5bf0d2ac2c96b45a06d5423a0519ba5a8b088ddcea589bf4466f515468fc2b21927a5cfa2e150750336e9517f5d41274f0adbd5d92
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

Processes:

resource	yara_rule
behavioral2/memory/1696-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1696-58-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1696-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1696-62-0x0000000000400000-0x0000000000414000-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

Processes:

f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid	Process
472	csrsll.exe
1620	csrsll.exe
1696	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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.execsrsll.exe

description	pid	Process	procid_target
PID 4236 set thread context of 2660	4236	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exe	91
PID 472 set thread context of 1620	472	csrsll.exe	99
PID 472 set thread context of 1696	472	csrsll.exe	100

UPX packed file 20 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4236-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4236-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2660-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2660-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4236-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2660-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000b000000023c05-29.dat	upx
behavioral2/memory/472-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/472-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2660-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/472-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1696-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1696-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1696-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1696-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/472-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1696-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2660-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1620-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1696-62-0x0000000000400000-0x0000000000414000-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

Processes:

csrsll.execsrsll.exef275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exef275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.execmd.exereg.execsrsll.exe

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	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

csrsll.exe

description	pid	Process
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe
Token: SeDebugPrivilege	1620	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exef275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.execsrsll.execsrsll.exe

pid	Process
4236	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exe
2660	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exe
472	csrsll.exe
1620	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exef275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.execmd.execsrsll.exe

description	pid	Process	procid_target
PID 4236 wrote to memory of 2660	4236	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exe	91
PID 4236 wrote to memory of 2660	4236	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exe	91
PID 4236 wrote to memory of 2660	4236	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exe	91
PID 4236 wrote to memory of 2660	4236	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exe	91
PID 4236 wrote to memory of 2660	4236	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exe	91
PID 4236 wrote to memory of 2660	4236	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exe	91
PID 4236 wrote to memory of 2660	4236	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exe	91
PID 4236 wrote to memory of 2660	4236	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exe	91
PID 2660 wrote to memory of 1856	2660	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exe	92
PID 2660 wrote to memory of 1856	2660	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exe	92
PID 2660 wrote to memory of 1856	2660	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exe	92
PID 1856 wrote to memory of 4764	1856	cmd.exe	95
PID 1856 wrote to memory of 4764	1856	cmd.exe	95
PID 1856 wrote to memory of 4764	1856	cmd.exe	95
PID 2660 wrote to memory of 472	2660	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exe	96
PID 2660 wrote to memory of 472	2660	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exe	96
PID 2660 wrote to memory of 472	2660	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exe	96
PID 472 wrote to memory of 1620	472	csrsll.exe	99
PID 472 wrote to memory of 1620	472	csrsll.exe	99
PID 472 wrote to memory of 1620	472	csrsll.exe	99
PID 472 wrote to memory of 1620	472	csrsll.exe	99
PID 472 wrote to memory of 1620	472	csrsll.exe	99
PID 472 wrote to memory of 1620	472	csrsll.exe	99
PID 472 wrote to memory of 1620	472	csrsll.exe	99
PID 472 wrote to memory of 1620	472	csrsll.exe	99
PID 472 wrote to memory of 1696	472	csrsll.exe	100
PID 472 wrote to memory of 1696	472	csrsll.exe	100
PID 472 wrote to memory of 1696	472	csrsll.exe	100
PID 472 wrote to memory of 1696	472	csrsll.exe	100
PID 472 wrote to memory of 1696	472	csrsll.exe	100
PID 472 wrote to memory of 1696	472	csrsll.exe	100
PID 472 wrote to memory of 1696	472	csrsll.exe	100
PID 472 wrote to memory of 1696	472	csrsll.exe	100

C:\Users\Admin\AppData\Local\Temp\f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exe
"C:\Users\Admin\AppData\Local\Temp\f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4236
- C:\Users\Admin\AppData\Local\Temp\f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exe
  "C:\Users\Admin\AppData\Local\Temp\f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2660
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\GTAJX.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1856
  - - 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:4764
- - 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:472
  - - 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:1620
  - - 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:1696

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\GTAJX.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
2441ee5a86f08295c91f8e26c50d58a7

SHA1
a7d827c3d707df22460c47d0e050a8d7920134a7

SHA256
f1b4cb5359eaa5e3fc649dc4ec7fbdeffb7a40fc416372e6ca1ff00771d5abec

SHA512
5d6cba95b5f75b37e81a4eea33cb66461110e08ba05e5b5e4d2ddc74d9a936ec3deda811d70ab0321e081bda48c42cc30dec0ccbab88ab810fbca83444e2b020

Download Submit
memory/472-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/472-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/472-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/472-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1620-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1696-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1696-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1696-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1696-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1696-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1696-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2660-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2660-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2660-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2660-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2660-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4236-6-0x0000000002A60000-0x0000000002A62000-memory.dmp

Filesize
8KB

Download
memory/4236-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4236-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4236-4-0x0000000002A40000-0x0000000002A42000-memory.dmp

Filesize
8KB

Download
memory/4236-3-0x0000000002A30000-0x0000000002A32000-memory.dmp

Filesize
8KB

Download
memory/4236-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download