modiloader | 6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8

Analysis

max time kernel
119s
max time network
117s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
07-01-2025 01:50

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General

Target

6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8.exe
Size

90KB
MD5

ffe8f0acb0b98d841c79ae1896e7c529
SHA1

29ab45898bf9dbae712d904a70cca44105feb078
SHA256

6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8
SHA512

3d20856c25507cdc92d4da1c295df9add7ab2b7c8caba4480cb40cadda30f1cbd5d23b130e048d4da7c5bfb45772eb50f4154d6b1b81fb64ead67c5a99e9425b
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDA:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE36

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/3300-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3300-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3300-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3300-62-0x0000000000400000-0x0000000000414000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8.exe

Executes dropped EXE 3 IoCs

pid	Process
1944	csrsll.exe
2832	csrsll.exe
3300	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-1-5-21-940901362-3608833189-1915618603-1000\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 4420 set thread context of 4704	4420	6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8.exe	84
PID 1944 set thread context of 2832	1944	csrsll.exe	91
PID 1944 set thread context of 3300	1944	csrsll.exe	92

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4420-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4420-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4704-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4704-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4420-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4704-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023cd0-29.dat	upx
behavioral2/memory/4704-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1944-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1944-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3300-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3300-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3300-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3300-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4704-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1944-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3300-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2832-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3300-62-0x0000000000400000-0x0000000000414000-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

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	6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8.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	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe
Token: SeDebugPrivilege	2832	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4420	6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8.exe
4704	6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8.exe
1944	csrsll.exe
2832	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4420 wrote to memory of 4704	4420	6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8.exe	84
PID 4420 wrote to memory of 4704	4420	6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8.exe	84
PID 4420 wrote to memory of 4704	4420	6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8.exe	84
PID 4420 wrote to memory of 4704	4420	6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8.exe	84
PID 4420 wrote to memory of 4704	4420	6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8.exe	84
PID 4420 wrote to memory of 4704	4420	6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8.exe	84
PID 4420 wrote to memory of 4704	4420	6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8.exe	84
PID 4420 wrote to memory of 4704	4420	6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8.exe	84
PID 4704 wrote to memory of 2300	4704	6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8.exe	85
PID 4704 wrote to memory of 2300	4704	6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8.exe	85
PID 4704 wrote to memory of 2300	4704	6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8.exe	85
PID 2300 wrote to memory of 2692	2300	cmd.exe	89
PID 2300 wrote to memory of 2692	2300	cmd.exe	89
PID 2300 wrote to memory of 2692	2300	cmd.exe	89
PID 4704 wrote to memory of 1944	4704	6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8.exe	90
PID 4704 wrote to memory of 1944	4704	6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8.exe	90
PID 4704 wrote to memory of 1944	4704	6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8.exe	90
PID 1944 wrote to memory of 2832	1944	csrsll.exe	91
PID 1944 wrote to memory of 2832	1944	csrsll.exe	91
PID 1944 wrote to memory of 2832	1944	csrsll.exe	91
PID 1944 wrote to memory of 2832	1944	csrsll.exe	91
PID 1944 wrote to memory of 2832	1944	csrsll.exe	91
PID 1944 wrote to memory of 2832	1944	csrsll.exe	91
PID 1944 wrote to memory of 2832	1944	csrsll.exe	91
PID 1944 wrote to memory of 2832	1944	csrsll.exe	91
PID 1944 wrote to memory of 3300	1944	csrsll.exe	92
PID 1944 wrote to memory of 3300	1944	csrsll.exe	92
PID 1944 wrote to memory of 3300	1944	csrsll.exe	92
PID 1944 wrote to memory of 3300	1944	csrsll.exe	92
PID 1944 wrote to memory of 3300	1944	csrsll.exe	92
PID 1944 wrote to memory of 3300	1944	csrsll.exe	92
PID 1944 wrote to memory of 3300	1944	csrsll.exe	92
PID 1944 wrote to memory of 3300	1944	csrsll.exe	92

C:\Users\Admin\AppData\Local\Temp\6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8.exe
"C:\Users\Admin\AppData\Local\Temp\6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4420
- C:\Users\Admin\AppData\Local\Temp\6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8.exe
  "C:\Users\Admin\AppData\Local\Temp\6a211a31ce9804c438538a7520fd5e67ff45a84b6e79480524af33d6e54a7ba8.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4704
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\YKTKU.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2300
  - - 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:2692
- - 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:1944
  - - 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:2832
  - - 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:3300

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\YKTKU.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
9286d3a1535389ab6b4e847fa80d881a

SHA1
ce533516611c49d59247d17cc0e4310925168836

SHA256
c94d49183571635c3dc898a33f0eb66cc671c7d661a486420367701c4bdf84d0

SHA512
70463b1eddf66ad6323d1a81e0da2fa1cc89a9e4ef85f6eda6c982c11d4d205e97792b1596569ec18125c4ee06d733b1840c218435b48e0c01000c6132ba6ec3

Download Submit
memory/1944-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1944-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1944-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2832-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3300-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3300-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3300-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3300-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3300-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3300-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4420-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4420-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4420-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4420-6-0x0000000002330000-0x0000000002332000-memory.dmp

Filesize
8KB

Download
memory/4420-4-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/4420-3-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/4704-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4704-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4704-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/4704-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4704-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4704-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads