modiloader | 8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8

Analysis

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

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
12/01/2025, 21:46

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General

Target

8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8.exe
Size

90KB
MD5

95c9769501cfaef6af5b0c25cb2fe62c
SHA1

ded4fabc2295adb70aab559b9b94c0e3c9ab4649
SHA256

8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8
SHA512

f556102c1d0ade346769c5415f94b6aa54535b74dcde7079f0111db4f98813bfd51e664799bb6ae935135b01d66c8d777743c21ef1feed6653cc327f1392d301
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDi:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3E

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/760-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/760-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/760-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/760-62-0x0000000000400000-0x0000000000414000-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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8.exe

Executes dropped EXE 3 IoCs

pid	Process
3924	csrsll.exe
3196	csrsll.exe
760	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-1-5-21-4050598569-1597076380-177084960-1000\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 4732 set thread context of 1660	4732	8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8.exe	86
PID 3924 set thread context of 3196	3924	csrsll.exe	95
PID 3924 set thread context of 760	3924	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4732-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4732-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1660-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1660-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4732-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1660-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000b000000023b83-28.dat	upx
behavioral2/memory/1660-38-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3924-39-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3924-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/760-48-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/760-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/760-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/760-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3924-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/760-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1660-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3196-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/760-62-0x0000000000400000-0x0000000000414000-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	8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8.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	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe
Token: SeDebugPrivilege	3196	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4732	8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8.exe
1660	8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8.exe
3924	csrsll.exe
3196	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4732 wrote to memory of 1660	4732	8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8.exe	86
PID 4732 wrote to memory of 1660	4732	8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8.exe	86
PID 4732 wrote to memory of 1660	4732	8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8.exe	86
PID 4732 wrote to memory of 1660	4732	8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8.exe	86
PID 4732 wrote to memory of 1660	4732	8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8.exe	86
PID 4732 wrote to memory of 1660	4732	8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8.exe	86
PID 4732 wrote to memory of 1660	4732	8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8.exe	86
PID 4732 wrote to memory of 1660	4732	8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8.exe	86
PID 1660 wrote to memory of 2576	1660	8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8.exe	88
PID 1660 wrote to memory of 2576	1660	8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8.exe	88
PID 1660 wrote to memory of 2576	1660	8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8.exe	88
PID 2576 wrote to memory of 1604	2576	cmd.exe	91
PID 2576 wrote to memory of 1604	2576	cmd.exe	91
PID 2576 wrote to memory of 1604	2576	cmd.exe	91
PID 1660 wrote to memory of 3924	1660	8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8.exe	92
PID 1660 wrote to memory of 3924	1660	8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8.exe	92
PID 1660 wrote to memory of 3924	1660	8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8.exe	92
PID 3924 wrote to memory of 3196	3924	csrsll.exe	95
PID 3924 wrote to memory of 3196	3924	csrsll.exe	95
PID 3924 wrote to memory of 3196	3924	csrsll.exe	95
PID 3924 wrote to memory of 3196	3924	csrsll.exe	95
PID 3924 wrote to memory of 3196	3924	csrsll.exe	95
PID 3924 wrote to memory of 3196	3924	csrsll.exe	95
PID 3924 wrote to memory of 3196	3924	csrsll.exe	95
PID 3924 wrote to memory of 3196	3924	csrsll.exe	95
PID 3924 wrote to memory of 760	3924	csrsll.exe	96
PID 3924 wrote to memory of 760	3924	csrsll.exe	96
PID 3924 wrote to memory of 760	3924	csrsll.exe	96
PID 3924 wrote to memory of 760	3924	csrsll.exe	96
PID 3924 wrote to memory of 760	3924	csrsll.exe	96
PID 3924 wrote to memory of 760	3924	csrsll.exe	96
PID 3924 wrote to memory of 760	3924	csrsll.exe	96
PID 3924 wrote to memory of 760	3924	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8.exe
"C:\Users\Admin\AppData\Local\Temp\8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4732
- C:\Users\Admin\AppData\Local\Temp\8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8.exe
  "C:\Users\Admin\AppData\Local\Temp\8d50ce3eaed488e8978b293af581842b66ba2259f2a1e292768d3ff0d8ae5bb8.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1660
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\WYAKQ.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2576
  - - 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:1604
- - 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:3924
  - - 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:3196
  - - 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:760

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\WYAKQ.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
e2ea6eba7394eaccb29d99fc6dc784e0

SHA1
e7a1a8e0ee5a4a1a8703bf915ec9c7ae861cfdde

SHA256
c47ddb1f4615c683fe77d27d5128d6323d0e260b7d982aefbe4ac34182205ab3

SHA512
3c456a637629a5c9251d2dd46212f2697d6a003c2e4a9c24886000d70ec737f6df3f1d62fcc32cbf2ec3643e585516536e0e9c6e559fa3c69a453eb104b0b19a

Download Submit
memory/760-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/760-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/760-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/760-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/760-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/760-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1660-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1660-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1660-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1660-38-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1660-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1660-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/3196-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3924-39-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3924-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3924-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4732-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4732-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4732-6-0x0000000002B80000-0x0000000002B82000-memory.dmp

Filesize
8KB

Download
memory/4732-5-0x0000000002B70000-0x0000000002B72000-memory.dmp

Filesize
8KB

Download
memory/4732-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4732-3-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads