modiloader | 8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b

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
01-01-2025 18:38

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General

Target

8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b.exe
Size

90KB
MD5

346a9e7c96cdd0df6eedd20fcef51d2f
SHA1

a29ed11d8c26daad6fa8f7123b28f57aeed960c8
SHA256

8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b
SHA512

8c4d5da11eb8f9f98149ae5237773d8a9e37a4e65fe4ceeec5c9d45bbd7ae141e8b3bff66a0c67651916713702d9454792322538f41f2d62e407ce9b9fb97cd4
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDq:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3M

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/4256-49-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4256-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4256-50-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4256-60-0x0000000000400000-0x0000000000414000-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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b.exe

Executes dropped EXE 3 IoCs

pid	Process
4384	csrsll.exe
3216	csrsll.exe
4256	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-1-5-21-3350944739-639801879-157714471-1000\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 3064 set thread context of 4436	3064	8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b.exe	83
PID 4384 set thread context of 3216	4384	csrsll.exe	97
PID 4384 set thread context of 4256	4384	csrsll.exe	98

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3064-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3064-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4436-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4436-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4436-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3064-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b000000023b7b-28.dat	upx
behavioral2/memory/4436-38-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4384-39-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4384-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4256-43-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4256-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4256-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4384-53-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4256-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4256-48-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4436-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3216-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4256-60-0x0000000000400000-0x0000000000414000-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	8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b.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	8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3064	8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b.exe
4436	8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b.exe
4384	csrsll.exe
3216	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3064 wrote to memory of 4436	3064	8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b.exe	83
PID 3064 wrote to memory of 4436	3064	8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b.exe	83
PID 3064 wrote to memory of 4436	3064	8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b.exe	83
PID 3064 wrote to memory of 4436	3064	8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b.exe	83
PID 3064 wrote to memory of 4436	3064	8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b.exe	83
PID 3064 wrote to memory of 4436	3064	8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b.exe	83
PID 3064 wrote to memory of 4436	3064	8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b.exe	83
PID 3064 wrote to memory of 4436	3064	8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b.exe	83
PID 4436 wrote to memory of 4744	4436	8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b.exe	84
PID 4436 wrote to memory of 4744	4436	8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b.exe	84
PID 4436 wrote to memory of 4744	4436	8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b.exe	84
PID 4744 wrote to memory of 4500	4744	cmd.exe	88
PID 4744 wrote to memory of 4500	4744	cmd.exe	88
PID 4744 wrote to memory of 4500	4744	cmd.exe	88
PID 4436 wrote to memory of 4384	4436	8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b.exe	89
PID 4436 wrote to memory of 4384	4436	8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b.exe	89
PID 4436 wrote to memory of 4384	4436	8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b.exe	89
PID 4384 wrote to memory of 3216	4384	csrsll.exe	97
PID 4384 wrote to memory of 3216	4384	csrsll.exe	97
PID 4384 wrote to memory of 3216	4384	csrsll.exe	97
PID 4384 wrote to memory of 3216	4384	csrsll.exe	97
PID 4384 wrote to memory of 3216	4384	csrsll.exe	97
PID 4384 wrote to memory of 3216	4384	csrsll.exe	97
PID 4384 wrote to memory of 3216	4384	csrsll.exe	97
PID 4384 wrote to memory of 3216	4384	csrsll.exe	97
PID 4384 wrote to memory of 4256	4384	csrsll.exe	98
PID 4384 wrote to memory of 4256	4384	csrsll.exe	98
PID 4384 wrote to memory of 4256	4384	csrsll.exe	98
PID 4384 wrote to memory of 4256	4384	csrsll.exe	98
PID 4384 wrote to memory of 4256	4384	csrsll.exe	98
PID 4384 wrote to memory of 4256	4384	csrsll.exe	98
PID 4384 wrote to memory of 4256	4384	csrsll.exe	98
PID 4384 wrote to memory of 4256	4384	csrsll.exe	98

C:\Users\Admin\AppData\Local\Temp\8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b.exe
"C:\Users\Admin\AppData\Local\Temp\8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3064
- C:\Users\Admin\AppData\Local\Temp\8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b.exe
  "C:\Users\Admin\AppData\Local\Temp\8a40328abdf137f79e3a9a1b4b93e6d76b1f15a1e5f8779ee725d22ae455151b.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4436
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\MIJUR.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4744
  - - 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:4500
- - 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:4384
  - - 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:3216
  - - 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:4256

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\MIJUR.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
d651f60c7a5e326cce415ce4ba20d77a

SHA1
267c6589ed45d026407f145cdf246a30703037dc

SHA256
f647a3a4009d60bcdce8b585a9660d0da9a8f0391203dc4404a6958aafd17225

SHA512
90225a179a615c89d1f29078a96d0c5c0dda4214d6a6746f0661f335b9e23e2b2639e95b9881abda9b0df36279928f3c9c501324cc3908f099e6a08e132329e4

Download Submit
memory/3064-3-0x0000000002A00000-0x0000000002A02000-memory.dmp

Filesize
8KB

Download
memory/3064-4-0x0000000002A10000-0x0000000002A12000-memory.dmp

Filesize
8KB

Download
memory/3064-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3064-6-0x0000000002A30000-0x0000000002A32000-memory.dmp

Filesize
8KB

Download
memory/3064-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3064-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3216-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4256-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4256-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4256-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4256-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4256-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4256-43-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4384-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4384-53-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4384-39-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4436-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4436-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4436-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4436-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4436-38-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads