modiloader | 4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902

Analysis

max time kernel
118s
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
07-12-2024 19:52

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General

Target

4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902N.exe
Size

326KB
MD5

32524eae9d114b857ed1d19407341d90
SHA1

cda532a776738288438cc89b644dc98d1a6952c6
SHA256

4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902
SHA512

475964a48f6e031855794e23576011dd8a6c7770791b122798eed437462d0d34e8e1238fe2f48d923090e07df1a89ea2d170b5dd7a4cf0860f9cae38d2be906b
SSDEEP

3072:ce2A0wxDqUpM5scww4chO+O1BmP5DG0sg3i4XZ9WvDZHwdRX/L+gP38XV:csxD5cwohO+O1sVG0/pZ6iPC8

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/4172-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4172-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4172-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4172-60-0x0000000000400000-0x0000000000414000-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	4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902N.exe

Executes dropped EXE 3 IoCs

pid	Process
1856	csrsll.exe
4496	csrsll.exe
4172	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 4972 set thread context of 4836	4972	4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902N.exe	82
PID 1856 set thread context of 4496	1856	csrsll.exe	93
PID 1856 set thread context of 4172	1856	csrsll.exe	94

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4972-0-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4972-5-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4836-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4836-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4972-11-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4836-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023c89-28.dat	upx
behavioral2/memory/1856-35-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4836-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1856-40-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/1856-41-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4172-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4172-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4172-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4172-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4172-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1856-54-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4836-57-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4496-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4172-60-0x0000000000400000-0x0000000000414000-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	4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902N.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	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe
Token: SeDebugPrivilege	4496	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4972	4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902N.exe
4836	4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902N.exe
1856	csrsll.exe
4496	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4972 wrote to memory of 4836	4972	4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902N.exe	82
PID 4972 wrote to memory of 4836	4972	4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902N.exe	82
PID 4972 wrote to memory of 4836	4972	4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902N.exe	82
PID 4972 wrote to memory of 4836	4972	4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902N.exe	82
PID 4972 wrote to memory of 4836	4972	4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902N.exe	82
PID 4972 wrote to memory of 4836	4972	4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902N.exe	82
PID 4972 wrote to memory of 4836	4972	4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902N.exe	82
PID 4972 wrote to memory of 4836	4972	4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902N.exe	82
PID 4836 wrote to memory of 4048	4836	4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902N.exe	83
PID 4836 wrote to memory of 4048	4836	4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902N.exe	83
PID 4836 wrote to memory of 4048	4836	4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902N.exe	83
PID 4048 wrote to memory of 1664	4048	cmd.exe	86
PID 4048 wrote to memory of 1664	4048	cmd.exe	86
PID 4048 wrote to memory of 1664	4048	cmd.exe	86
PID 4836 wrote to memory of 1856	4836	4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902N.exe	87
PID 4836 wrote to memory of 1856	4836	4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902N.exe	87
PID 4836 wrote to memory of 1856	4836	4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902N.exe	87
PID 1856 wrote to memory of 4496	1856	csrsll.exe	93
PID 1856 wrote to memory of 4496	1856	csrsll.exe	93
PID 1856 wrote to memory of 4496	1856	csrsll.exe	93
PID 1856 wrote to memory of 4496	1856	csrsll.exe	93
PID 1856 wrote to memory of 4496	1856	csrsll.exe	93
PID 1856 wrote to memory of 4496	1856	csrsll.exe	93
PID 1856 wrote to memory of 4496	1856	csrsll.exe	93
PID 1856 wrote to memory of 4496	1856	csrsll.exe	93
PID 1856 wrote to memory of 4172	1856	csrsll.exe	94
PID 1856 wrote to memory of 4172	1856	csrsll.exe	94
PID 1856 wrote to memory of 4172	1856	csrsll.exe	94
PID 1856 wrote to memory of 4172	1856	csrsll.exe	94
PID 1856 wrote to memory of 4172	1856	csrsll.exe	94
PID 1856 wrote to memory of 4172	1856	csrsll.exe	94
PID 1856 wrote to memory of 4172	1856	csrsll.exe	94
PID 1856 wrote to memory of 4172	1856	csrsll.exe	94

C:\Users\Admin\AppData\Local\Temp\4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902N.exe
"C:\Users\Admin\AppData\Local\Temp\4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4972
- C:\Users\Admin\AppData\Local\Temp\4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902N.exe
  "C:\Users\Admin\AppData\Local\Temp\4dc7ba0f03ed1141a64b4f892b9389e1a28581bbda8211b3939be9ead1fc3902N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4836
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\STBPO.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4048
  - - 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:1664
- - 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:1856
  - - 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:4496
  - - 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:4172

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\STBPO.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
326KB

MD5
35d6e45ce85c33e149856728989771b1

SHA1
21465f1b7006606ff57b2a812e1d55f2ddcac8b3

SHA256
1bd166b84ba2da2fa5dc2247351fc8c3d44c99a2545c4c5ee6bbbc0ea6ee9925

SHA512
94fea1452892eced5f942914ba4cb4308fd09f315f309885cd80cc1a3f1a93fa211d081753b304a6cc672080dcc0002b5e1d795d0e409176f1a7d06d0168fd01

Download Submit
memory/1856-54-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1856-40-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1856-35-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1856-41-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4172-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4172-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4172-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4172-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4172-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4172-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4496-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4836-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4836-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4836-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4836-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4836-57-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4972-11-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4972-0-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4972-5-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4972-6-0x0000000002B80000-0x0000000002B82000-memory.dmp

Filesize
8KB

Download
memory/4972-4-0x0000000002B60000-0x0000000002B62000-memory.dmp

Filesize
8KB

Download
memory/4972-3-0x0000000002B50000-0x0000000002B52000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads