modiloader | 08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62

Analysis

max time kernel
119s
max time network
118s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21-01-2025 03:51

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General

Target

08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62N.exe
Size

90KB
MD5

a10abf4151142a927086af48c2dc3ce0
SHA1

06e244d840229c958f5b1761c22aee1ad53ad678
SHA256

08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62
SHA512

50e626c4074808cdbdd344b596cedefd5ee635edc8d015cfa423a14006b96657f9549f00a3a60e0ab36f471544db065a61b27223f696e366f63944e82c266f6f
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

resource	yara_rule
behavioral2/memory/4640-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4640-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4640-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4640-61-0x0000000000400000-0x0000000000414000-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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62N.exe

Executes dropped EXE 3 IoCs

pid	Process
4320	csrsll.exe
3696	csrsll.exe
4640	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-1-5-21-3350944739-639801879-157714471-1000\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 2884 set thread context of 1264	2884	08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62N.exe	90
PID 4320 set thread context of 3696	4320	csrsll.exe	100
PID 4320 set thread context of 4640	4320	csrsll.exe	101

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2884-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2884-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1264-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1264-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1264-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2884-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0032000000023b75-29.dat	upx
behavioral2/memory/4320-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1264-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4320-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4320-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4640-48-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4640-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4640-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4640-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4640-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4320-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1264-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3696-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4640-61-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62N.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

description	pid	Process
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe
Token: SeDebugPrivilege	3696	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2884	08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62N.exe
1264	08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62N.exe
4320	csrsll.exe
3696	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2884 wrote to memory of 1264	2884	08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62N.exe	90
PID 2884 wrote to memory of 1264	2884	08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62N.exe	90
PID 2884 wrote to memory of 1264	2884	08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62N.exe	90
PID 2884 wrote to memory of 1264	2884	08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62N.exe	90
PID 2884 wrote to memory of 1264	2884	08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62N.exe	90
PID 2884 wrote to memory of 1264	2884	08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62N.exe	90
PID 2884 wrote to memory of 1264	2884	08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62N.exe	90
PID 2884 wrote to memory of 1264	2884	08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62N.exe	90
PID 1264 wrote to memory of 208	1264	08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62N.exe	91
PID 1264 wrote to memory of 208	1264	08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62N.exe	91
PID 1264 wrote to memory of 208	1264	08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62N.exe	91
PID 208 wrote to memory of 3700	208	cmd.exe	95
PID 208 wrote to memory of 3700	208	cmd.exe	95
PID 208 wrote to memory of 3700	208	cmd.exe	95
PID 1264 wrote to memory of 4320	1264	08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62N.exe	96
PID 1264 wrote to memory of 4320	1264	08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62N.exe	96
PID 1264 wrote to memory of 4320	1264	08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62N.exe	96
PID 4320 wrote to memory of 3696	4320	csrsll.exe	100
PID 4320 wrote to memory of 3696	4320	csrsll.exe	100
PID 4320 wrote to memory of 3696	4320	csrsll.exe	100
PID 4320 wrote to memory of 3696	4320	csrsll.exe	100
PID 4320 wrote to memory of 3696	4320	csrsll.exe	100
PID 4320 wrote to memory of 3696	4320	csrsll.exe	100
PID 4320 wrote to memory of 3696	4320	csrsll.exe	100
PID 4320 wrote to memory of 3696	4320	csrsll.exe	100
PID 4320 wrote to memory of 4640	4320	csrsll.exe	101
PID 4320 wrote to memory of 4640	4320	csrsll.exe	101
PID 4320 wrote to memory of 4640	4320	csrsll.exe	101
PID 4320 wrote to memory of 4640	4320	csrsll.exe	101
PID 4320 wrote to memory of 4640	4320	csrsll.exe	101
PID 4320 wrote to memory of 4640	4320	csrsll.exe	101
PID 4320 wrote to memory of 4640	4320	csrsll.exe	101
PID 4320 wrote to memory of 4640	4320	csrsll.exe	101

C:\Users\Admin\AppData\Local\Temp\08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62N.exe
"C:\Users\Admin\AppData\Local\Temp\08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2884
- C:\Users\Admin\AppData\Local\Temp\08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62N.exe
  "C:\Users\Admin\AppData\Local\Temp\08cbcc91b333769ed8e632e50715cf534867181132b3f31a7036999fdf358d62N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1264
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\WYKOT.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:208
  - - 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:3700
- - 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:4320
  - - 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:3696
  - - 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:4640

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\WYKOT.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
8680e95777718117fad6da924aa2eb7d

SHA1
24d7e2cb5f3c3d944bc9c4cd3e18684d5ae35562

SHA256
b99633f4a6fb8c47d50e899a6845913b9f02e4f286a537c9911c96b0ee3f1fa9

SHA512
20bd9e427a6e3b4b734a12f1c879db354ed3601db99e39580d697f44e1106100117274951fba466896843fecc7a6aba070cfb5482d5aa3efbd15e1a107afc75b

Download Submit
memory/1264-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1264-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1264-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1264-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1264-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/1264-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2884-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2884-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2884-5-0x0000000002440000-0x0000000002442000-memory.dmp

Filesize
8KB

Download
memory/2884-3-0x0000000002420000-0x0000000002422000-memory.dmp

Filesize
8KB

Download
memory/2884-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2884-6-0x0000000002450000-0x0000000002452000-memory.dmp

Filesize
8KB

Download
memory/3696-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4320-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4320-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4320-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4320-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4640-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4640-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4640-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4640-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4640-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4640-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads