modiloader | 79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946e

Analysis

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

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20/12/2024, 01:45

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General

Target

79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946eN.exe
Size

90KB
MD5

8d34fa9520283cd4c98b1b23cbf1fe20
SHA1

12c5992372be078808c1ab480ec6a0d65b6756b3
SHA256

79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946e
SHA512

9c479346d575089f1ba32319a9b6aa0cc1e376bd25164560fb77d012ba1c63ea23308740fb5c838d6fd7675c8b1b74666aeeb2466f48e47b8fdfbc0f1322e902
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDK: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/5068-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5068-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5068-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5068-62-0x0000000000400000-0x0000000000414000-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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946eN.exe

Executes dropped EXE 3 IoCs

pid	Process
4988	csrsll.exe
1664	csrsll.exe
5068	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-1-5-21-3756129449-3121373848-4276368241-1000\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 528 set thread context of 3388	528	79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946eN.exe	84
PID 4988 set thread context of 1664	4988	csrsll.exe	95
PID 4988 set thread context of 5068	4988	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/528-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/528-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3388-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3388-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/528-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3388-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0009000000023c5f-29.dat	upx
behavioral2/memory/3388-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4988-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4988-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5068-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5068-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5068-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5068-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5068-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4988-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3388-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1664-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5068-62-0x0000000000400000-0x0000000000414000-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	79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946eN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946eN.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	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe
Token: SeDebugPrivilege	1664	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
528	79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946eN.exe
3388	79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946eN.exe
4988	csrsll.exe
1664	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 528 wrote to memory of 3388	528	79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946eN.exe	84
PID 528 wrote to memory of 3388	528	79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946eN.exe	84
PID 528 wrote to memory of 3388	528	79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946eN.exe	84
PID 528 wrote to memory of 3388	528	79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946eN.exe	84
PID 528 wrote to memory of 3388	528	79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946eN.exe	84
PID 528 wrote to memory of 3388	528	79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946eN.exe	84
PID 528 wrote to memory of 3388	528	79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946eN.exe	84
PID 528 wrote to memory of 3388	528	79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946eN.exe	84
PID 3388 wrote to memory of 2324	3388	79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946eN.exe	87
PID 3388 wrote to memory of 2324	3388	79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946eN.exe	87
PID 3388 wrote to memory of 2324	3388	79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946eN.exe	87
PID 2324 wrote to memory of 1960	2324	cmd.exe	90
PID 2324 wrote to memory of 1960	2324	cmd.exe	90
PID 2324 wrote to memory of 1960	2324	cmd.exe	90
PID 3388 wrote to memory of 4988	3388	79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946eN.exe	91
PID 3388 wrote to memory of 4988	3388	79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946eN.exe	91
PID 3388 wrote to memory of 4988	3388	79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946eN.exe	91
PID 4988 wrote to memory of 1664	4988	csrsll.exe	95
PID 4988 wrote to memory of 1664	4988	csrsll.exe	95
PID 4988 wrote to memory of 1664	4988	csrsll.exe	95
PID 4988 wrote to memory of 1664	4988	csrsll.exe	95
PID 4988 wrote to memory of 1664	4988	csrsll.exe	95
PID 4988 wrote to memory of 1664	4988	csrsll.exe	95
PID 4988 wrote to memory of 1664	4988	csrsll.exe	95
PID 4988 wrote to memory of 1664	4988	csrsll.exe	95
PID 4988 wrote to memory of 5068	4988	csrsll.exe	96
PID 4988 wrote to memory of 5068	4988	csrsll.exe	96
PID 4988 wrote to memory of 5068	4988	csrsll.exe	96
PID 4988 wrote to memory of 5068	4988	csrsll.exe	96
PID 4988 wrote to memory of 5068	4988	csrsll.exe	96
PID 4988 wrote to memory of 5068	4988	csrsll.exe	96
PID 4988 wrote to memory of 5068	4988	csrsll.exe	96
PID 4988 wrote to memory of 5068	4988	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946eN.exe
"C:\Users\Admin\AppData\Local\Temp\79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946eN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:528
- C:\Users\Admin\AppData\Local\Temp\79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946eN.exe
  "C:\Users\Admin\AppData\Local\Temp\79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946eN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3388
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FJEMB.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2324
  - - 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:1960
- - 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:4988
  - - 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:1664
  - - 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:5068

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\FJEMB.bat

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
8d34fa9520283cd4c98b1b23cbf1fe20

SHA1
12c5992372be078808c1ab480ec6a0d65b6756b3

SHA256
79a50f0a1c483a7a7f5b648ed70805bf1ccfe036f48905879ee4a07b8ad0946e

SHA512
9c479346d575089f1ba32319a9b6aa0cc1e376bd25164560fb77d012ba1c63ea23308740fb5c838d6fd7675c8b1b74666aeeb2466f48e47b8fdfbc0f1322e902

Download Submit
memory/528-3-0x0000000002420000-0x0000000002422000-memory.dmp

Filesize
8KB

Download
memory/528-6-0x0000000002550000-0x0000000002552000-memory.dmp

Filesize
8KB

Download
memory/528-5-0x0000000002540000-0x0000000002542000-memory.dmp

Filesize
8KB

Download
memory/528-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/528-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/528-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1664-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3388-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3388-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3388-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3388-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3388-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4988-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4988-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4988-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5068-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5068-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5068-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5068-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5068-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5068-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads