modiloader | eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420

Analysis

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

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01/12/2024, 21:57

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General

Target

eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420.exe
Size

90KB
MD5

758b3b6c08235b3972c0517ef9ac417b
SHA1

76489187bef0ec0951abd3e5ffcfec62479d324b
SHA256

eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420
SHA512

a8d82d6111884cbe32679ae29160bfef78e70bc9424e5cbfca658f1e349bb921a35d6b799d1cc811f84d54c2b3b85347666e23d5b8c605b7e3fa67d49843157b
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDf:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3J

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/4384-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4384-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4384-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4384-61-0x0000000000400000-0x0000000000414000-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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420.exe

Executes dropped EXE 3 IoCs

pid	Process
4464	csrsll.exe
4520	csrsll.exe
4384	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-1-5-21-2437139445-1151884604-3026847218-1000\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 2124 set thread context of 1228	2124	eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420.exe	84
PID 4464 set thread context of 4520	4464	csrsll.exe	101
PID 4464 set thread context of 4384	4464	csrsll.exe	102

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2124-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2124-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1228-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1228-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2124-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1228-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023ca4-29.dat	upx
behavioral2/memory/1228-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4464-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4464-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4384-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4384-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4384-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4384-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4384-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4464-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1228-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4520-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4384-61-0x0000000000400000-0x0000000000414000-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	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	eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe
Token: SeDebugPrivilege	4520	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2124	eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420.exe
1228	eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420.exe
4464	csrsll.exe
4520	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2124 wrote to memory of 1228	2124	eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420.exe	84
PID 2124 wrote to memory of 1228	2124	eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420.exe	84
PID 2124 wrote to memory of 1228	2124	eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420.exe	84
PID 2124 wrote to memory of 1228	2124	eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420.exe	84
PID 2124 wrote to memory of 1228	2124	eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420.exe	84
PID 2124 wrote to memory of 1228	2124	eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420.exe	84
PID 2124 wrote to memory of 1228	2124	eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420.exe	84
PID 2124 wrote to memory of 1228	2124	eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420.exe	84
PID 1228 wrote to memory of 3436	1228	eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420.exe	91
PID 1228 wrote to memory of 3436	1228	eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420.exe	91
PID 1228 wrote to memory of 3436	1228	eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420.exe	91
PID 3436 wrote to memory of 5072	3436	cmd.exe	94
PID 3436 wrote to memory of 5072	3436	cmd.exe	94
PID 3436 wrote to memory of 5072	3436	cmd.exe	94
PID 1228 wrote to memory of 4464	1228	eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420.exe	95
PID 1228 wrote to memory of 4464	1228	eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420.exe	95
PID 1228 wrote to memory of 4464	1228	eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420.exe	95
PID 4464 wrote to memory of 4520	4464	csrsll.exe	101
PID 4464 wrote to memory of 4520	4464	csrsll.exe	101
PID 4464 wrote to memory of 4520	4464	csrsll.exe	101
PID 4464 wrote to memory of 4520	4464	csrsll.exe	101
PID 4464 wrote to memory of 4520	4464	csrsll.exe	101
PID 4464 wrote to memory of 4520	4464	csrsll.exe	101
PID 4464 wrote to memory of 4520	4464	csrsll.exe	101
PID 4464 wrote to memory of 4520	4464	csrsll.exe	101
PID 4464 wrote to memory of 4384	4464	csrsll.exe	102
PID 4464 wrote to memory of 4384	4464	csrsll.exe	102
PID 4464 wrote to memory of 4384	4464	csrsll.exe	102
PID 4464 wrote to memory of 4384	4464	csrsll.exe	102
PID 4464 wrote to memory of 4384	4464	csrsll.exe	102
PID 4464 wrote to memory of 4384	4464	csrsll.exe	102
PID 4464 wrote to memory of 4384	4464	csrsll.exe	102
PID 4464 wrote to memory of 4384	4464	csrsll.exe	102

C:\Users\Admin\AppData\Local\Temp\eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420.exe
"C:\Users\Admin\AppData\Local\Temp\eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2124
- C:\Users\Admin\AppData\Local\Temp\eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420.exe
  "C:\Users\Admin\AppData\Local\Temp\eaad4c4620ce73358f25aed108eea9cef71c3305ee4b455c773823f45c892420.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1228
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BGUUI.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3436
  - - 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:5072
- - 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:4464
  - - 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:4520
  - - 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:4384

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\BGUUI.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
404fe73e0714474eb39d7065940c8641

SHA1
e7add91b428f64f912d5d4f12540a4fb553ccf00

SHA256
5456ed294371fedc8e9cf95563d4d84393b468064cb5f81072329dbe104efc85

SHA512
dbef5ed648280d999a1da5cad22321fe504ed31a870049de4a5c3d3ff6ae0a814b1c25cf9d9290c3968dcfa3c5c49b28279102463f673d98728560761bfbac3b

Download Submit
memory/1228-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1228-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1228-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1228-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1228-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2124-6-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/2124-5-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/2124-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2124-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2124-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2124-3-0x00000000022E0000-0x00000000022E2000-memory.dmp

Filesize
8KB

Download
memory/4384-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4384-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4384-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4384-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4384-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4384-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4464-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4464-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4464-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4520-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads