modiloader | fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e

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
18-12-2024 08:46

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General

Target

fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe
Size

90KB
MD5

7d4355f7ff1bc501cb8943610d71bc0e
SHA1

676445a3e07a15c7bd3f4746e4fdd8d2c52bcc5c
SHA256

fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e
SHA512

496ef36388f56097559caad71c1613f7cad808f903dd37f4a49733f1325f6daee10384931c711ba7bcc4c1bafd397d0e376166cc97faca97a8104d69eefecdf9
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDe:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3I

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/4784-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4784-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4784-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4784-63-0x0000000000400000-0x0000000000414000-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	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe

Executes dropped EXE 3 IoCs

pid	Process
428	csrsll.exe
4324	csrsll.exe
4784	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 1996 set thread context of 2356	1996	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	87
PID 428 set thread context of 4324	428	csrsll.exe	101
PID 428 set thread context of 4784	428	csrsll.exe	102

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1996-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1996-6-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2356-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2356-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2356-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1996-16-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023cb3-30.dat	upx
behavioral2/memory/2356-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/428-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/428-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4784-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4784-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4784-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4784-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4784-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/428-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2356-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4324-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4784-63-0x0000000000400000-0x0000000000414000-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	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.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	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe
Token: SeDebugPrivilege	4324	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1996	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe
2356	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe
428	csrsll.exe
4324	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1996 wrote to memory of 2356	1996	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	87
PID 1996 wrote to memory of 2356	1996	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	87
PID 1996 wrote to memory of 2356	1996	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	87
PID 1996 wrote to memory of 2356	1996	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	87
PID 1996 wrote to memory of 2356	1996	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	87
PID 1996 wrote to memory of 2356	1996	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	87
PID 1996 wrote to memory of 2356	1996	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	87
PID 1996 wrote to memory of 2356	1996	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	87
PID 2356 wrote to memory of 5040	2356	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	90
PID 2356 wrote to memory of 5040	2356	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	90
PID 2356 wrote to memory of 5040	2356	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	90
PID 5040 wrote to memory of 1792	5040	cmd.exe	94
PID 5040 wrote to memory of 1792	5040	cmd.exe	94
PID 5040 wrote to memory of 1792	5040	cmd.exe	94
PID 2356 wrote to memory of 428	2356	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	95
PID 2356 wrote to memory of 428	2356	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	95
PID 2356 wrote to memory of 428	2356	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	95
PID 428 wrote to memory of 4324	428	csrsll.exe	101
PID 428 wrote to memory of 4324	428	csrsll.exe	101
PID 428 wrote to memory of 4324	428	csrsll.exe	101
PID 428 wrote to memory of 4324	428	csrsll.exe	101
PID 428 wrote to memory of 4324	428	csrsll.exe	101
PID 428 wrote to memory of 4324	428	csrsll.exe	101
PID 428 wrote to memory of 4324	428	csrsll.exe	101
PID 428 wrote to memory of 4324	428	csrsll.exe	101
PID 428 wrote to memory of 4784	428	csrsll.exe	102
PID 428 wrote to memory of 4784	428	csrsll.exe	102
PID 428 wrote to memory of 4784	428	csrsll.exe	102
PID 428 wrote to memory of 4784	428	csrsll.exe	102
PID 428 wrote to memory of 4784	428	csrsll.exe	102
PID 428 wrote to memory of 4784	428	csrsll.exe	102
PID 428 wrote to memory of 4784	428	csrsll.exe	102
PID 428 wrote to memory of 4784	428	csrsll.exe	102

C:\Users\Admin\AppData\Local\Temp\fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe
"C:\Users\Admin\AppData\Local\Temp\fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1996
- C:\Users\Admin\AppData\Local\Temp\fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe
  "C:\Users\Admin\AppData\Local\Temp\fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2356
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\EUVSB.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:5040
  - - 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:1792
- - 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:428
  - - 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:4324
  - - 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:4784

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\EUVSB.bat

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
62665334c2da791905db55924fc51551

SHA1
04bfa0d28ff14de96f090f762e1a4a90e2a3fe75

SHA256
c079b327f00b68eeffc50eda65a6a6b9d699f9d24ae31e38f10bfbba8cce9dbe

SHA512
991400f999777135aeb03d96bfe17c8799b10f235352f2ebc778f8d8e8496fa763c4a9e4a3ddddb89569b60ee327fd2d11b143e590d01a096da0ac00cce4f1d5

Download Submit
memory/428-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/428-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/428-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1996-3-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/1996-5-0x0000000002330000-0x0000000002332000-memory.dmp

Filesize
8KB

Download
memory/1996-4-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/1996-6-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1996-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1996-16-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2356-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2356-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2356-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2356-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2356-59-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/2356-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4324-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4784-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4784-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4784-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4784-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4784-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4784-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads