modiloader | f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cd

Analysis

max time kernel
119s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
10-11-2024 13:57

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General

Target

f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.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/2428-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2428-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2428-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2428-62-0x0000000000400000-0x0000000000414000-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:

f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid	Process
2084	csrsll.exe
2508	csrsll.exe
2428	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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.execsrsll.exe

description	pid	Process	procid_target
PID 1076 set thread context of 4728	1076	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exe	91
PID 2084 set thread context of 2508	2084	csrsll.exe	99
PID 2084 set thread context of 2428	2084	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/1076-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1076-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4728-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4728-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1076-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4728-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0009000000023ca8-29.dat	upx
behavioral2/memory/2084-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4728-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2084-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2084-43-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2428-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2428-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2428-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2428-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2428-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2084-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4728-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2508-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2428-62-0x0000000000400000-0x0000000000414000-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:

f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.execmd.exereg.execsrsll.execsrsll.execsrsll.exef275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

csrsll.exe

description	pid	Process
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe
Token: SeDebugPrivilege	2508	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exef275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.execsrsll.execsrsll.exe

pid	Process
1076	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exe
4728	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exe
2084	csrsll.exe
2508	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exef275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.execmd.execsrsll.exe

description	pid	Process	procid_target
PID 1076 wrote to memory of 4728	1076	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exe	91
PID 1076 wrote to memory of 4728	1076	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exe	91
PID 1076 wrote to memory of 4728	1076	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exe	91
PID 1076 wrote to memory of 4728	1076	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exe	91
PID 1076 wrote to memory of 4728	1076	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exe	91
PID 1076 wrote to memory of 4728	1076	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exe	91
PID 1076 wrote to memory of 4728	1076	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exe	91
PID 1076 wrote to memory of 4728	1076	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exe	91
PID 4728 wrote to memory of 3408	4728	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exe	94
PID 4728 wrote to memory of 3408	4728	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exe	94
PID 4728 wrote to memory of 3408	4728	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exe	94
PID 3408 wrote to memory of 2332	3408	cmd.exe	97
PID 3408 wrote to memory of 2332	3408	cmd.exe	97
PID 3408 wrote to memory of 2332	3408	cmd.exe	97
PID 4728 wrote to memory of 2084	4728	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exe	98
PID 4728 wrote to memory of 2084	4728	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exe	98
PID 4728 wrote to memory of 2084	4728	f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exe	98
PID 2084 wrote to memory of 2508	2084	csrsll.exe	99
PID 2084 wrote to memory of 2508	2084	csrsll.exe	99
PID 2084 wrote to memory of 2508	2084	csrsll.exe	99
PID 2084 wrote to memory of 2508	2084	csrsll.exe	99
PID 2084 wrote to memory of 2508	2084	csrsll.exe	99
PID 2084 wrote to memory of 2508	2084	csrsll.exe	99
PID 2084 wrote to memory of 2508	2084	csrsll.exe	99
PID 2084 wrote to memory of 2508	2084	csrsll.exe	99
PID 2084 wrote to memory of 2428	2084	csrsll.exe	100
PID 2084 wrote to memory of 2428	2084	csrsll.exe	100
PID 2084 wrote to memory of 2428	2084	csrsll.exe	100
PID 2084 wrote to memory of 2428	2084	csrsll.exe	100
PID 2084 wrote to memory of 2428	2084	csrsll.exe	100
PID 2084 wrote to memory of 2428	2084	csrsll.exe	100
PID 2084 wrote to memory of 2428	2084	csrsll.exe	100
PID 2084 wrote to memory of 2428	2084	csrsll.exe	100

C:\Users\Admin\AppData\Local\Temp\f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exe
"C:\Users\Admin\AppData\Local\Temp\f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1076
- C:\Users\Admin\AppData\Local\Temp\f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exe
  "C:\Users\Admin\AppData\Local\Temp\f275f3ea296d02beba95493794313d8b4fe84582a82d1cc6fcfb52b957be16cdN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4728
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\LCWBX.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3408
  - - 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:2332
- - 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:2084
  - - 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:2508
  - - 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:2428

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\LCWBX.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
e6e4f45d1635d632222f40154a119ec1

SHA1
950a296ccf1a5bd4c04a2b9e4af47b63bb2f06e1

SHA256
c6a4aea6e6db3bf00c1a31eb4c4406df183ce822979efc17e0121ee53209e2a3

SHA512
5910d37d22942bcbc4bba1ea4316456d85658a38188d866f98c4a3abcd68b9bd306101da2374c12a8f0d2c5178b4c7c8587fd9809c083cd49d0b620bf109a8e4

Download Submit
memory/1076-3-0x0000000002A00000-0x0000000002A02000-memory.dmp

Filesize
8KB

Download
memory/1076-6-0x0000000002A30000-0x0000000002A32000-memory.dmp

Filesize
8KB

Download
memory/1076-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1076-5-0x0000000002A20000-0x0000000002A22000-memory.dmp

Filesize
8KB

Download
memory/1076-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1076-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2084-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2084-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2084-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2084-43-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2428-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2428-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2428-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2428-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2428-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2428-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2508-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4728-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4728-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4728-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4728-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4728-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download