modiloader | fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e

Analysis

max time kernel
149s
max time network
149s
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 08:52

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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/4324-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4324-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4324-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4324-62-0x0000000000400000-0x0000000000414000-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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe

Executes dropped EXE 3 IoCs

pid	Process
532	csrsll.exe
4592	csrsll.exe
4324	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-1-5-21-940901362-3608833189-1915618603-1000\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 1512 set thread context of 392	1512	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	85
PID 532 set thread context of 4592	532	csrsll.exe	103
PID 532 set thread context of 4324	532	csrsll.exe	104

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1512-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1512-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/392-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/392-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1512-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/392-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000b000000023bb1-29.dat	upx
behavioral2/memory/392-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/532-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/532-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4324-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4324-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/532-54-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4324-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4324-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4324-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/392-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4592-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4324-62-0x0000000000400000-0x0000000000414000-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	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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe
Token: SeDebugPrivilege	4592	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1512	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe
392	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe
532	csrsll.exe
4592	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1512 wrote to memory of 392	1512	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	85
PID 1512 wrote to memory of 392	1512	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	85
PID 1512 wrote to memory of 392	1512	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	85
PID 1512 wrote to memory of 392	1512	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	85
PID 1512 wrote to memory of 392	1512	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	85
PID 1512 wrote to memory of 392	1512	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	85
PID 1512 wrote to memory of 392	1512	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	85
PID 1512 wrote to memory of 392	1512	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	85
PID 392 wrote to memory of 3388	392	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	91
PID 392 wrote to memory of 3388	392	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	91
PID 392 wrote to memory of 3388	392	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	91
PID 3388 wrote to memory of 4904	3388	cmd.exe	95
PID 3388 wrote to memory of 4904	3388	cmd.exe	95
PID 3388 wrote to memory of 4904	3388	cmd.exe	95
PID 392 wrote to memory of 532	392	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	96
PID 392 wrote to memory of 532	392	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	96
PID 392 wrote to memory of 532	392	fc7c7d42db2a4ad45c0ce67bdab50129b89211f31ec6b311592283e400259f3e.exe	96
PID 532 wrote to memory of 4592	532	csrsll.exe	103
PID 532 wrote to memory of 4592	532	csrsll.exe	103
PID 532 wrote to memory of 4592	532	csrsll.exe	103
PID 532 wrote to memory of 4592	532	csrsll.exe	103
PID 532 wrote to memory of 4592	532	csrsll.exe	103
PID 532 wrote to memory of 4592	532	csrsll.exe	103
PID 532 wrote to memory of 4592	532	csrsll.exe	103
PID 532 wrote to memory of 4592	532	csrsll.exe	103
PID 532 wrote to memory of 4324	532	csrsll.exe	104
PID 532 wrote to memory of 4324	532	csrsll.exe	104
PID 532 wrote to memory of 4324	532	csrsll.exe	104
PID 532 wrote to memory of 4324	532	csrsll.exe	104
PID 532 wrote to memory of 4324	532	csrsll.exe	104
PID 532 wrote to memory of 4324	532	csrsll.exe	104
PID 532 wrote to memory of 4324	532	csrsll.exe	104
PID 532 wrote to memory of 4324	532	csrsll.exe	104

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:1512
- 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:392
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FWOKF.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3388
  - - 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:4904
- - 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:532
  - - 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:4592
  - - 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:4324

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\FWOKF.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
8112891e13a48670122017de9f33cb58

SHA1
0f7c47ce989890fe3f49bf131af99f535b85edc9

SHA256
b9b146b8a111d6bb9f725e8d98f545f37e82c8f5967292f4cd69b1bb5db43661

SHA512
5b6080b62631e52a045fbfb92d2a24d3038e9b6b05207bbde78b70a3a4a9702ec326e8f77645aa1bcc076dac9e817cf54151308623f066c5ddfd2041ab87a626

Download Submit
memory/392-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/392-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/392-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/392-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/392-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/532-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/532-54-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/532-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1512-4-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/1512-3-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/1512-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1512-6-0x0000000002CA0000-0x0000000002CA2000-memory.dmp

Filesize
8KB

Download
memory/1512-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1512-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4324-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4324-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4324-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4324-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4324-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4324-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4592-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads