modiloader | fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27e

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
06-12-2024 06:01

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General

Target

fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27eN.exe
Size

90KB
MD5

f95ffc19491c4a4b985ac52f617cea90
SHA1

e11f13e570d69a6e2ac057d16c16a96a54b9585c
SHA256

fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27e
SHA512

44dfbf33cb78ad3b454aa1fea0dc60e1771a4c86c59530f2c8c70b1f82843f21059f2021695b72cfb88f934e6d6ac3297b76eeed268ca713ada79fbf84f7cff3
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDD:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3d

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/4412-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4412-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4412-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4412-60-0x0000000000400000-0x0000000000414000-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	fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27eN.exe

Executes dropped EXE 3 IoCs

pid	Process
3276	csrsll.exe
4556	csrsll.exe
4412	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 5064 set thread context of 4800	5064	fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27eN.exe	84
PID 3276 set thread context of 4556	3276	csrsll.exe	101
PID 3276 set thread context of 4412	3276	csrsll.exe	102

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5064-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5064-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4800-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4800-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4800-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5064-15-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023cb3-29.dat	upx
behavioral2/memory/4800-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3276-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3276-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4412-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4412-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4412-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4412-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3276-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4412-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4800-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4556-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4412-60-0x0000000000400000-0x0000000000414000-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	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	fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27eN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27eN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe
Token: SeDebugPrivilege	4556	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
5064	fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27eN.exe
4800	fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27eN.exe
3276	csrsll.exe
4556	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 5064 wrote to memory of 4800	5064	fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27eN.exe	84
PID 5064 wrote to memory of 4800	5064	fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27eN.exe	84
PID 5064 wrote to memory of 4800	5064	fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27eN.exe	84
PID 5064 wrote to memory of 4800	5064	fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27eN.exe	84
PID 5064 wrote to memory of 4800	5064	fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27eN.exe	84
PID 5064 wrote to memory of 4800	5064	fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27eN.exe	84
PID 5064 wrote to memory of 4800	5064	fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27eN.exe	84
PID 5064 wrote to memory of 4800	5064	fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27eN.exe	84
PID 4800 wrote to memory of 5020	4800	fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27eN.exe	85
PID 4800 wrote to memory of 5020	4800	fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27eN.exe	85
PID 4800 wrote to memory of 5020	4800	fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27eN.exe	85
PID 5020 wrote to memory of 936	5020	cmd.exe	89
PID 5020 wrote to memory of 936	5020	cmd.exe	89
PID 5020 wrote to memory of 936	5020	cmd.exe	89
PID 4800 wrote to memory of 3276	4800	fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27eN.exe	90
PID 4800 wrote to memory of 3276	4800	fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27eN.exe	90
PID 4800 wrote to memory of 3276	4800	fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27eN.exe	90
PID 3276 wrote to memory of 4556	3276	csrsll.exe	101
PID 3276 wrote to memory of 4556	3276	csrsll.exe	101
PID 3276 wrote to memory of 4556	3276	csrsll.exe	101
PID 3276 wrote to memory of 4556	3276	csrsll.exe	101
PID 3276 wrote to memory of 4556	3276	csrsll.exe	101
PID 3276 wrote to memory of 4556	3276	csrsll.exe	101
PID 3276 wrote to memory of 4556	3276	csrsll.exe	101
PID 3276 wrote to memory of 4556	3276	csrsll.exe	101
PID 3276 wrote to memory of 4412	3276	csrsll.exe	102
PID 3276 wrote to memory of 4412	3276	csrsll.exe	102
PID 3276 wrote to memory of 4412	3276	csrsll.exe	102
PID 3276 wrote to memory of 4412	3276	csrsll.exe	102
PID 3276 wrote to memory of 4412	3276	csrsll.exe	102
PID 3276 wrote to memory of 4412	3276	csrsll.exe	102
PID 3276 wrote to memory of 4412	3276	csrsll.exe	102
PID 3276 wrote to memory of 4412	3276	csrsll.exe	102

C:\Users\Admin\AppData\Local\Temp\fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27eN.exe
"C:\Users\Admin\AppData\Local\Temp\fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27eN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5064
- C:\Users\Admin\AppData\Local\Temp\fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27eN.exe
  "C:\Users\Admin\AppData\Local\Temp\fd64b264b022a2df21c3ba371c757b6dab1d3b875cb908a80524cf7d0fcdd27eN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4800
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\XDECK.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:5020
  - - 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:936
- - 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:3276
  - - 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:4556
  - - 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:4412

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\XDECK.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
9742ea431a2ad0d32cce7f26d3b1e1d5

SHA1
e8585ff8f4969c30327f7840f11b3c108618dfcd

SHA256
17e029c2d5ab1dc809b10b0e1e585b40b89b291630f5259a2e93c89f45eaf916

SHA512
bd9accd470cb0fa54c6ac95598e265d8ce5ea9d03d7973313ef6c180274d84b982b733c56eccc21d9f3a3f2b45db70dd2ac2649bad33818d45039b66cc5f8629

Download Submit
memory/3276-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3276-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3276-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4412-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4412-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4412-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4412-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4412-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4412-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4556-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4800-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4800-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4800-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4800-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4800-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5064-6-0x0000000002C90000-0x0000000002C92000-memory.dmp

Filesize
8KB

Download
memory/5064-3-0x0000000002B60000-0x0000000002B62000-memory.dmp

Filesize
8KB

Download
memory/5064-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5064-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5064-5-0x0000000002C80000-0x0000000002C82000-memory.dmp

Filesize
8KB

Download
memory/5064-15-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads