modiloader | 6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895

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
07-01-2025 18:31

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General

Target

6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895N.exe
Size

90KB
MD5

6f6a772b2855d15e4df6933be78b0c80
SHA1

06807a7fc9721239d1a4729e350f3b7ae932b900
SHA256

6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895
SHA512

2a7a2f5b761cba85f4dafca63efccbe7b8225b86c551ff8be23095b3c10b532cf1ae296785dd82a579a3aa0674d7c51e775b248d8cdc5148208d377e99241745
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDi:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE30

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/4716-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4716-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4716-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4716-62-0x0000000000400000-0x0000000000414000-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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895N.exe

Executes dropped EXE 3 IoCs

pid	Process
3156	csrsll.exe
2920	csrsll.exe
4716	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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2216 set thread context of 3056	2216	6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895N.exe	83
PID 3156 set thread context of 2920	3156	csrsll.exe	89
PID 3156 set thread context of 4716	3156	csrsll.exe	90

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2216-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2216-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3056-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3056-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2216-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3056-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023c9b-29.dat	upx
behavioral2/memory/3056-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3156-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3156-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4716-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4716-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4716-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3156-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4716-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4716-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3056-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2920-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4716-62-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895N.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	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2216	6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895N.exe
3056	6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895N.exe
3156	csrsll.exe
2920	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2216 wrote to memory of 3056	2216	6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895N.exe	83
PID 2216 wrote to memory of 3056	2216	6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895N.exe	83
PID 2216 wrote to memory of 3056	2216	6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895N.exe	83
PID 2216 wrote to memory of 3056	2216	6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895N.exe	83
PID 2216 wrote to memory of 3056	2216	6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895N.exe	83
PID 2216 wrote to memory of 3056	2216	6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895N.exe	83
PID 2216 wrote to memory of 3056	2216	6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895N.exe	83
PID 2216 wrote to memory of 3056	2216	6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895N.exe	83
PID 3056 wrote to memory of 1924	3056	6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895N.exe	84
PID 3056 wrote to memory of 1924	3056	6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895N.exe	84
PID 3056 wrote to memory of 1924	3056	6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895N.exe	84
PID 1924 wrote to memory of 4892	1924	cmd.exe	87
PID 1924 wrote to memory of 4892	1924	cmd.exe	87
PID 1924 wrote to memory of 4892	1924	cmd.exe	87
PID 3056 wrote to memory of 3156	3056	6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895N.exe	88
PID 3056 wrote to memory of 3156	3056	6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895N.exe	88
PID 3056 wrote to memory of 3156	3056	6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895N.exe	88
PID 3156 wrote to memory of 2920	3156	csrsll.exe	89
PID 3156 wrote to memory of 2920	3156	csrsll.exe	89
PID 3156 wrote to memory of 2920	3156	csrsll.exe	89
PID 3156 wrote to memory of 2920	3156	csrsll.exe	89
PID 3156 wrote to memory of 2920	3156	csrsll.exe	89
PID 3156 wrote to memory of 2920	3156	csrsll.exe	89
PID 3156 wrote to memory of 2920	3156	csrsll.exe	89
PID 3156 wrote to memory of 2920	3156	csrsll.exe	89
PID 3156 wrote to memory of 4716	3156	csrsll.exe	90
PID 3156 wrote to memory of 4716	3156	csrsll.exe	90
PID 3156 wrote to memory of 4716	3156	csrsll.exe	90
PID 3156 wrote to memory of 4716	3156	csrsll.exe	90
PID 3156 wrote to memory of 4716	3156	csrsll.exe	90
PID 3156 wrote to memory of 4716	3156	csrsll.exe	90
PID 3156 wrote to memory of 4716	3156	csrsll.exe	90
PID 3156 wrote to memory of 4716	3156	csrsll.exe	90

C:\Users\Admin\AppData\Local\Temp\6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895N.exe
"C:\Users\Admin\AppData\Local\Temp\6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2216
- C:\Users\Admin\AppData\Local\Temp\6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895N.exe
  "C:\Users\Admin\AppData\Local\Temp\6b283fe2b59e444f3a3850d84ed291afbd7423396676f836c9c2ab96155e7895N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3056
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\KBYMN.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1924
  - - 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:4892
- - 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:3156
  - - 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:2920
  - - 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:4716

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\KBYMN.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
5be10847f35ec5334d97e471d54600d8

SHA1
f4321e1b9b96077a2c4eac4610278175d140ff1e

SHA256
a918bdcf226ce5ba1a23da3ad650ee5e8ac9307e67964c3b28437bf86a757804

SHA512
ea39388d772deebc3099c5186da42ce977ad6a89505c6c2014a63fedbd90f1a923cdcc330299645d16bc8fac4d5b8ba66d762dd0c39d80c4842d38aaf15f0766

Download Submit
memory/2216-3-0x0000000002A50000-0x0000000002A52000-memory.dmp

Filesize
8KB

Download
memory/2216-4-0x0000000002A60000-0x0000000002A62000-memory.dmp

Filesize
8KB

Download
memory/2216-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2216-6-0x0000000002A80000-0x0000000002A82000-memory.dmp

Filesize
8KB

Download
memory/2216-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2216-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2920-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3056-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3056-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3056-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3056-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3056-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3156-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3156-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3156-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4716-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4716-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4716-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4716-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4716-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4716-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads