modiloader | f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13ae

Analysis

max time kernel
118s
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
08-01-2025 05:52

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General

Target

f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13aeN.exe
Size

90KB
MD5

79ed2c89ebf0408596db9a5b8f5cc220
SHA1

12c307236a071a6cdeef71af6892c5bc40925805
SHA256

f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13ae
SHA512

f15c88e48209cd904a7e186a4eeecc4d4507ea12b61a013f62cee940531eb4e12b603f209278437282c75014b302c956d0ab21b8470598b8efe97d0b3d626a6b
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDg: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/4764-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4764-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4764-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4764-62-0x0000000000400000-0x0000000000414000-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	f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13aeN.exe

Executes dropped EXE 3 IoCs

pid	Process
4276	csrsll.exe
2536	csrsll.exe
4764	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 4912 set thread context of 760	4912	f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13aeN.exe	84
PID 4276 set thread context of 2536	4276	csrsll.exe	95
PID 4276 set thread context of 4764	4276	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4912-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4912-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/760-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/760-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/760-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4912-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023ca9-29.dat	upx
behavioral2/memory/760-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4276-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4276-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4764-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4764-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4764-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4764-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4764-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4276-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/760-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2536-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4764-62-0x0000000000400000-0x0000000000414000-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	f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13aeN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13aeN.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe
Token: SeDebugPrivilege	2536	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4912	f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13aeN.exe
760	f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13aeN.exe
4276	csrsll.exe
2536	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4912 wrote to memory of 760	4912	f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13aeN.exe	84
PID 4912 wrote to memory of 760	4912	f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13aeN.exe	84
PID 4912 wrote to memory of 760	4912	f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13aeN.exe	84
PID 4912 wrote to memory of 760	4912	f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13aeN.exe	84
PID 4912 wrote to memory of 760	4912	f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13aeN.exe	84
PID 4912 wrote to memory of 760	4912	f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13aeN.exe	84
PID 4912 wrote to memory of 760	4912	f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13aeN.exe	84
PID 4912 wrote to memory of 760	4912	f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13aeN.exe	84
PID 760 wrote to memory of 4596	760	f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13aeN.exe	87
PID 760 wrote to memory of 4596	760	f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13aeN.exe	87
PID 760 wrote to memory of 4596	760	f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13aeN.exe	87
PID 4596 wrote to memory of 3944	4596	cmd.exe	90
PID 4596 wrote to memory of 3944	4596	cmd.exe	90
PID 4596 wrote to memory of 3944	4596	cmd.exe	90
PID 760 wrote to memory of 4276	760	f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13aeN.exe	91
PID 760 wrote to memory of 4276	760	f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13aeN.exe	91
PID 760 wrote to memory of 4276	760	f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13aeN.exe	91
PID 4276 wrote to memory of 2536	4276	csrsll.exe	95
PID 4276 wrote to memory of 2536	4276	csrsll.exe	95
PID 4276 wrote to memory of 2536	4276	csrsll.exe	95
PID 4276 wrote to memory of 2536	4276	csrsll.exe	95
PID 4276 wrote to memory of 2536	4276	csrsll.exe	95
PID 4276 wrote to memory of 2536	4276	csrsll.exe	95
PID 4276 wrote to memory of 2536	4276	csrsll.exe	95
PID 4276 wrote to memory of 2536	4276	csrsll.exe	95
PID 4276 wrote to memory of 4764	4276	csrsll.exe	96
PID 4276 wrote to memory of 4764	4276	csrsll.exe	96
PID 4276 wrote to memory of 4764	4276	csrsll.exe	96
PID 4276 wrote to memory of 4764	4276	csrsll.exe	96
PID 4276 wrote to memory of 4764	4276	csrsll.exe	96
PID 4276 wrote to memory of 4764	4276	csrsll.exe	96
PID 4276 wrote to memory of 4764	4276	csrsll.exe	96
PID 4276 wrote to memory of 4764	4276	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13aeN.exe
"C:\Users\Admin\AppData\Local\Temp\f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13aeN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4912
- C:\Users\Admin\AppData\Local\Temp\f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13aeN.exe
  "C:\Users\Admin\AppData\Local\Temp\f58b545e3af3125cee72a8c22b00be26e5efefb8b3c5b0d8ae7be97c15cc13aeN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:760
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\XHSXT.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4596
  - - 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:3944
- - 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:4276
  - - 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:2536
  - - 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:4764

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\XHSXT.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
657b86c903d66fde39d57ee429431eb0

SHA1
53c5a2b106e5c9d3f9137336321d99930eaef303

SHA256
4b8384d1a8f54686ef0b1a6577b20640d29ceaba61953a57bf5cef7fdba53d55

SHA512
97530047ddd986656c5d65d64682dea2716de479d1e54c66c9778a07415b5477acc7051aa982b0614f1913dc32fe8f93b56cea35f0779df701cf3173b6051bae

Download Submit
memory/760-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/760-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/760-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/760-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/760-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2536-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4276-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4276-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4276-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4764-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4764-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4764-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4764-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4764-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4764-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4912-3-0x0000000002B70000-0x0000000002B72000-memory.dmp

Filesize
8KB

Download
memory/4912-4-0x0000000002B80000-0x0000000002B82000-memory.dmp

Filesize
8KB

Download
memory/4912-6-0x0000000002BA0000-0x0000000002BA2000-memory.dmp

Filesize
8KB

Download
memory/4912-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4912-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4912-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads