modiloader | f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea

Analysis

max time kernel
149s
max time network
151s
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 14:49

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General

Target

f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe
Size

90KB
MD5

3f667b7a1b17fffa4cabe48898adb95f
SHA1

10ab9afe4171d689ce72f10f261a66b3502daf24
SHA256

f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea
SHA512

801823e644807af47d7b604dee5f343cde97f436942b64a320d322d4f1824b250d9f3f7958cf91b3bcff2b51b92065a45e29ab3a0eae455947575cf68c182e5b
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDh:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3j

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/4948-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4948-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4948-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4948-63-0x0000000000400000-0x0000000000414000-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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe

Executes dropped EXE 3 IoCs

pid	Process
2176	csrsll.exe
4508	csrsll.exe
4948	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-1-5-21-2878641211-696417878-3864914810-1000\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 2324 set thread context of 4300	2324	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	84
PID 2176 set thread context of 4508	2176	csrsll.exe	101
PID 2176 set thread context of 4948	2176	csrsll.exe	102

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2324-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2324-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4300-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4300-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4300-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2324-16-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023c7d-30.dat	upx
behavioral2/memory/4300-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2176-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2176-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4948-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4948-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4948-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4948-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4948-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2176-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4300-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4508-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4948-63-0x0000000000400000-0x0000000000414000-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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2324	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe
4300	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe
2176	csrsll.exe
4508	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2324 wrote to memory of 4300	2324	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	84
PID 2324 wrote to memory of 4300	2324	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	84
PID 2324 wrote to memory of 4300	2324	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	84
PID 2324 wrote to memory of 4300	2324	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	84
PID 2324 wrote to memory of 4300	2324	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	84
PID 2324 wrote to memory of 4300	2324	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	84
PID 2324 wrote to memory of 4300	2324	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	84
PID 2324 wrote to memory of 4300	2324	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	84
PID 4300 wrote to memory of 3856	4300	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	85
PID 4300 wrote to memory of 3856	4300	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	85
PID 4300 wrote to memory of 3856	4300	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	85
PID 3856 wrote to memory of 3376	3856	cmd.exe	91
PID 3856 wrote to memory of 3376	3856	cmd.exe	91
PID 3856 wrote to memory of 3376	3856	cmd.exe	91
PID 4300 wrote to memory of 2176	4300	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	92
PID 4300 wrote to memory of 2176	4300	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	92
PID 4300 wrote to memory of 2176	4300	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	92
PID 2176 wrote to memory of 4508	2176	csrsll.exe	101
PID 2176 wrote to memory of 4508	2176	csrsll.exe	101
PID 2176 wrote to memory of 4508	2176	csrsll.exe	101
PID 2176 wrote to memory of 4508	2176	csrsll.exe	101
PID 2176 wrote to memory of 4508	2176	csrsll.exe	101
PID 2176 wrote to memory of 4508	2176	csrsll.exe	101
PID 2176 wrote to memory of 4508	2176	csrsll.exe	101
PID 2176 wrote to memory of 4508	2176	csrsll.exe	101
PID 2176 wrote to memory of 4948	2176	csrsll.exe	102
PID 2176 wrote to memory of 4948	2176	csrsll.exe	102
PID 2176 wrote to memory of 4948	2176	csrsll.exe	102
PID 2176 wrote to memory of 4948	2176	csrsll.exe	102
PID 2176 wrote to memory of 4948	2176	csrsll.exe	102
PID 2176 wrote to memory of 4948	2176	csrsll.exe	102
PID 2176 wrote to memory of 4948	2176	csrsll.exe	102
PID 2176 wrote to memory of 4948	2176	csrsll.exe	102

C:\Users\Admin\AppData\Local\Temp\f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe
"C:\Users\Admin\AppData\Local\Temp\f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2324
- C:\Users\Admin\AppData\Local\Temp\f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe
  "C:\Users\Admin\AppData\Local\Temp\f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4300
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BVTSW.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3856
  - - 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:3376
- - 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:2176
  - - 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:4508
  - - 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:4948

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\BVTSW.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
0d15ac520624bbbf5542ac3ba5fdad72

SHA1
f345e3baa0addb9f1ad7a52645470785e84d57a4

SHA256
7bd9705fa0a017872daa50faea2d5d4b4b489f5a59c5e5a19690c2a6f61a9612

SHA512
c01c03fdd3a140f410db3b2cf89433675704640d56898105113f354eb95c23a7d803fbfea3b1a6afb0ffd83b0b04ec701f00da6c847a42699edf4eff44d88dd9

Download Submit
memory/2176-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2176-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2176-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2324-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2324-3-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/2324-4-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/2324-7-0x0000000002330000-0x0000000002332000-memory.dmp

Filesize
8KB

Download
memory/2324-6-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/2324-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2324-16-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4300-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4300-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4300-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4300-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4300-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4508-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4948-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4948-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4948-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4948-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4948-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4948-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads