modiloader | 81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708

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
17-12-2024 13:00

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General

Target

81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708N.exe
Size

90KB
MD5

cd4c3de20544d7c0fdfbdad17072b0d0
SHA1

b07d8743d4a7b08e0012b71de69233270d966ee7
SHA256

81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708
SHA512

30d5634a2fbf2b94121dfb7b221fafb9f3b3a5139a43dafd19936c3aa0cf8a22019ede6639a3d59cdfffb839ca957501789a48a74ef594295a91d2e0cde8e84d
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/1544-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1544-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1544-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1544-63-0x0000000000400000-0x0000000000414000-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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708N.exe

Executes dropped EXE 3 IoCs

pid	Process
3368	csrsll.exe
1544	csrsll.exe
2648	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 3084 set thread context of 3476	3084	81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708N.exe	82
PID 3368 set thread context of 2648	3368	csrsll.exe	93
PID 3368 set thread context of 1544	3368	csrsll.exe	94

UPX packed file 21 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3084-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3084-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3476-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3476-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3476-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3084-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023cb6-29.dat	upx
behavioral2/memory/3368-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3476-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3368-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3368-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1544-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1544-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1544-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3368-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1544-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3476-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1544-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3368-46-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1544-63-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2648-64-0x0000000000400000-0x000000000040B000-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	81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708N.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	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe
Token: SeDebugPrivilege	2648	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3084	81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708N.exe
3476	81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708N.exe
3368	csrsll.exe
2648	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3084 wrote to memory of 3476	3084	81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708N.exe	82
PID 3084 wrote to memory of 3476	3084	81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708N.exe	82
PID 3084 wrote to memory of 3476	3084	81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708N.exe	82
PID 3084 wrote to memory of 3476	3084	81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708N.exe	82
PID 3084 wrote to memory of 3476	3084	81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708N.exe	82
PID 3084 wrote to memory of 3476	3084	81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708N.exe	82
PID 3084 wrote to memory of 3476	3084	81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708N.exe	82
PID 3084 wrote to memory of 3476	3084	81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708N.exe	82
PID 3476 wrote to memory of 924	3476	81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708N.exe	83
PID 3476 wrote to memory of 924	3476	81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708N.exe	83
PID 3476 wrote to memory of 924	3476	81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708N.exe	83
PID 924 wrote to memory of 1796	924	cmd.exe	86
PID 924 wrote to memory of 1796	924	cmd.exe	86
PID 924 wrote to memory of 1796	924	cmd.exe	86
PID 3476 wrote to memory of 3368	3476	81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708N.exe	87
PID 3476 wrote to memory of 3368	3476	81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708N.exe	87
PID 3476 wrote to memory of 3368	3476	81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708N.exe	87
PID 3368 wrote to memory of 2648	3368	csrsll.exe	93
PID 3368 wrote to memory of 2648	3368	csrsll.exe	93
PID 3368 wrote to memory of 2648	3368	csrsll.exe	93
PID 3368 wrote to memory of 2648	3368	csrsll.exe	93
PID 3368 wrote to memory of 2648	3368	csrsll.exe	93
PID 3368 wrote to memory of 2648	3368	csrsll.exe	93
PID 3368 wrote to memory of 2648	3368	csrsll.exe	93
PID 3368 wrote to memory of 2648	3368	csrsll.exe	93
PID 3368 wrote to memory of 1544	3368	csrsll.exe	94
PID 3368 wrote to memory of 1544	3368	csrsll.exe	94
PID 3368 wrote to memory of 1544	3368	csrsll.exe	94
PID 3368 wrote to memory of 1544	3368	csrsll.exe	94
PID 3368 wrote to memory of 1544	3368	csrsll.exe	94
PID 3368 wrote to memory of 1544	3368	csrsll.exe	94
PID 3368 wrote to memory of 1544	3368	csrsll.exe	94
PID 3368 wrote to memory of 1544	3368	csrsll.exe	94

C:\Users\Admin\AppData\Local\Temp\81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708N.exe
"C:\Users\Admin\AppData\Local\Temp\81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3084
- C:\Users\Admin\AppData\Local\Temp\81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708N.exe
  "C:\Users\Admin\AppData\Local\Temp\81b5198de100e9a2f70b6eeae01277611497e7c19b1ba0b630b00144a8aca708N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3476
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\YMKIN.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:924
  - - 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:1796
- - 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:3368
  - - 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:2648
  - - 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:1544

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\YMKIN.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
f1e524a28bd6fdcddedf5c50d3c7a504

SHA1
a27ff976663d56b726eb3bee611f5e78e55c5a6b

SHA256
aa6806ffea3b13688d28e037b3908a9f4718fe7f2116cf6a2ff76289993fd679

SHA512
7ef65d955b94261408c0d82d61c1d370b5684bf7edcc13fbd8db8e67b8a50a12d3b377dc0e11b0769f177466dcbec3e93586bf63b5bc7a7667bcd331ad959227

Download Submit
memory/1544-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1544-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1544-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1544-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1544-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1544-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2648-64-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3084-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3084-4-0x0000000002C70000-0x0000000002C72000-memory.dmp

Filesize
8KB

Download
memory/3084-3-0x0000000002B60000-0x0000000002B62000-memory.dmp

Filesize
8KB

Download
memory/3084-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3084-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3084-6-0x0000000002CA0000-0x0000000002CA2000-memory.dmp

Filesize
8KB

Download
memory/3368-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3368-46-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3368-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3368-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3368-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3476-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3476-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3476-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3476-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3476-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads