modiloader | 4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507

Analysis

max time kernel
119s
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 05:41

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General

Target

4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507N.exe
Size

90KB
MD5

5c353a35e2201783b767ede34ffd1300
SHA1

c682d8d9b812d34ee653fcfdac261a161cc31957
SHA256

4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507
SHA512

c5c3179d08ea705599f602e3f71f072118d65f63d82bd3775a0be515e6fe88b212aa7047d83aaeaac9b5718fc2f8b1617e1a6b0ae592a6c21434259d6805594d
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDk:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3K

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/2460-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2460-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2460-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2460-61-0x0000000000400000-0x0000000000414000-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	4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507N.exe

Executes dropped EXE 3 IoCs

pid	Process
3676	csrsll.exe
4996	csrsll.exe
2460	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 3596 set thread context of 2140	3596	4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507N.exe	82
PID 3676 set thread context of 4996	3676	csrsll.exe	95
PID 3676 set thread context of 2460	3676	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3596-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3596-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2140-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2140-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3596-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2140-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000b000000023b94-29.dat	upx
behavioral2/memory/2140-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3676-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3676-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2460-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2460-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2460-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2460-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2460-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3676-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2140-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4996-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2460-61-0x0000000000400000-0x0000000000414000-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	4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507N.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507N.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe
Token: SeDebugPrivilege	4996	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3596	4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507N.exe
2140	4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507N.exe
3676	csrsll.exe
4996	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3596 wrote to memory of 2140	3596	4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507N.exe	82
PID 3596 wrote to memory of 2140	3596	4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507N.exe	82
PID 3596 wrote to memory of 2140	3596	4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507N.exe	82
PID 3596 wrote to memory of 2140	3596	4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507N.exe	82
PID 3596 wrote to memory of 2140	3596	4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507N.exe	82
PID 3596 wrote to memory of 2140	3596	4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507N.exe	82
PID 3596 wrote to memory of 2140	3596	4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507N.exe	82
PID 3596 wrote to memory of 2140	3596	4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507N.exe	82
PID 2140 wrote to memory of 4924	2140	4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507N.exe	87
PID 2140 wrote to memory of 4924	2140	4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507N.exe	87
PID 2140 wrote to memory of 4924	2140	4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507N.exe	87
PID 4924 wrote to memory of 1400	4924	cmd.exe	90
PID 4924 wrote to memory of 1400	4924	cmd.exe	90
PID 4924 wrote to memory of 1400	4924	cmd.exe	90
PID 2140 wrote to memory of 3676	2140	4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507N.exe	91
PID 2140 wrote to memory of 3676	2140	4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507N.exe	91
PID 2140 wrote to memory of 3676	2140	4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507N.exe	91
PID 3676 wrote to memory of 4996	3676	csrsll.exe	95
PID 3676 wrote to memory of 4996	3676	csrsll.exe	95
PID 3676 wrote to memory of 4996	3676	csrsll.exe	95
PID 3676 wrote to memory of 4996	3676	csrsll.exe	95
PID 3676 wrote to memory of 4996	3676	csrsll.exe	95
PID 3676 wrote to memory of 4996	3676	csrsll.exe	95
PID 3676 wrote to memory of 4996	3676	csrsll.exe	95
PID 3676 wrote to memory of 4996	3676	csrsll.exe	95
PID 3676 wrote to memory of 2460	3676	csrsll.exe	96
PID 3676 wrote to memory of 2460	3676	csrsll.exe	96
PID 3676 wrote to memory of 2460	3676	csrsll.exe	96
PID 3676 wrote to memory of 2460	3676	csrsll.exe	96
PID 3676 wrote to memory of 2460	3676	csrsll.exe	96
PID 3676 wrote to memory of 2460	3676	csrsll.exe	96
PID 3676 wrote to memory of 2460	3676	csrsll.exe	96
PID 3676 wrote to memory of 2460	3676	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507N.exe
"C:\Users\Admin\AppData\Local\Temp\4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3596
- C:\Users\Admin\AppData\Local\Temp\4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507N.exe
  "C:\Users\Admin\AppData\Local\Temp\4cd2c79d5c10601ec338e14c0c28ae3334381d1b88fdc259939d70c96c2ff507N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2140
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\DEXVE.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4924
  - - 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:1400
- - 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:3676
  - - 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:4996
  - - 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:2460

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\DEXVE.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
191fd3af105dc9a8368f1821ce4254e7

SHA1
e72de3bcf0d0b1dbc2f9432d220d4b36f0e2f90a

SHA256
b1572cd70f7a863229073325bb9ffdee53aed3d29bfe5e448d257e0037e2f07f

SHA512
4fc273cb1f3e483a04f046b84d3baeb8835e53581446631b377cef6e04e194780aeda5fad7ae94dff13e2e39c40b9b2d57236f481661c0524222c0671e7e1ce1

Download Submit
memory/2140-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2140-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2140-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2140-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2140-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2460-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2460-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2460-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2460-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2460-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2460-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3596-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3596-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/3596-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3596-6-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/3596-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3596-4-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/3676-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3676-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3676-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4996-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads