modiloader | 8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51

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 23:29

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General

Target

8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51N.exe
Size

90KB
MD5

fb19c4cb9f456eb243c41737e5f89120
SHA1

b8c1d4c545865f6b9c49f4746fd6cdabad57d5da
SHA256

8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51
SHA512

d8e50b9c405c8597187c48e27a6bf9409200a3e02634787bb4cc0a53808d8440a2a4356e4dbb92db0a0d8f37844161948ca993bf02482f50bee522c43fb0f1b6
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDy:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3w

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/3076-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3076-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3076-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3076-61-0x0000000000400000-0x0000000000414000-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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51N.exe

Executes dropped EXE 3 IoCs

pid	Process
5080	csrsll.exe
3420	csrsll.exe
3076	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-1-5-21-2437139445-1151884604-3026847218-1000\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 4592 set thread context of 4144	4592	8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51N.exe	84
PID 5080 set thread context of 3420	5080	csrsll.exe	102
PID 5080 set thread context of 3076	5080	csrsll.exe	103

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4592-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4592-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4144-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4144-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4144-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4592-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023cb5-29.dat	upx
behavioral2/memory/4144-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5080-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5080-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3076-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3076-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3076-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3076-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3076-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5080-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4144-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3420-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3076-61-0x0000000000400000-0x0000000000414000-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	8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51N.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	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe
Token: SeDebugPrivilege	3420	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4592	8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51N.exe
4144	8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51N.exe
5080	csrsll.exe
3420	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4592 wrote to memory of 4144	4592	8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51N.exe	84
PID 4592 wrote to memory of 4144	4592	8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51N.exe	84
PID 4592 wrote to memory of 4144	4592	8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51N.exe	84
PID 4592 wrote to memory of 4144	4592	8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51N.exe	84
PID 4592 wrote to memory of 4144	4592	8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51N.exe	84
PID 4592 wrote to memory of 4144	4592	8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51N.exe	84
PID 4592 wrote to memory of 4144	4592	8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51N.exe	84
PID 4592 wrote to memory of 4144	4592	8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51N.exe	84
PID 4144 wrote to memory of 5112	4144	8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51N.exe	85
PID 4144 wrote to memory of 5112	4144	8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51N.exe	85
PID 4144 wrote to memory of 5112	4144	8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51N.exe	85
PID 5112 wrote to memory of 1624	5112	cmd.exe	89
PID 5112 wrote to memory of 1624	5112	cmd.exe	89
PID 5112 wrote to memory of 1624	5112	cmd.exe	89
PID 4144 wrote to memory of 5080	4144	8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51N.exe	90
PID 4144 wrote to memory of 5080	4144	8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51N.exe	90
PID 4144 wrote to memory of 5080	4144	8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51N.exe	90
PID 5080 wrote to memory of 3420	5080	csrsll.exe	102
PID 5080 wrote to memory of 3420	5080	csrsll.exe	102
PID 5080 wrote to memory of 3420	5080	csrsll.exe	102
PID 5080 wrote to memory of 3420	5080	csrsll.exe	102
PID 5080 wrote to memory of 3420	5080	csrsll.exe	102
PID 5080 wrote to memory of 3420	5080	csrsll.exe	102
PID 5080 wrote to memory of 3420	5080	csrsll.exe	102
PID 5080 wrote to memory of 3420	5080	csrsll.exe	102
PID 5080 wrote to memory of 3076	5080	csrsll.exe	103
PID 5080 wrote to memory of 3076	5080	csrsll.exe	103
PID 5080 wrote to memory of 3076	5080	csrsll.exe	103
PID 5080 wrote to memory of 3076	5080	csrsll.exe	103
PID 5080 wrote to memory of 3076	5080	csrsll.exe	103
PID 5080 wrote to memory of 3076	5080	csrsll.exe	103
PID 5080 wrote to memory of 3076	5080	csrsll.exe	103
PID 5080 wrote to memory of 3076	5080	csrsll.exe	103

C:\Users\Admin\AppData\Local\Temp\8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51N.exe
"C:\Users\Admin\AppData\Local\Temp\8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4592
- C:\Users\Admin\AppData\Local\Temp\8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51N.exe
  "C:\Users\Admin\AppData\Local\Temp\8093632cf432033dda2faec6084a0ea59b363b3a8d095390021ef19410e11c51N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4144
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BCIAF.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:5112
  - - 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:1624
- - 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:5080
  - - 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:3420
  - - 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:3076

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\BCIAF.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
0937e1a1acf6a532a5a8edcd8516e149

SHA1
91fab73bf55f10ac842498b0d1dca13dffb96523

SHA256
f8e3263c196166299c50bc6a6bf5a338194be30381be671e912b291b086af01d

SHA512
d687b1c5a71c95476edf8cf9ce26d8db5a36d72ccb46325ab06bfb101f55c2135cc12a673666318fb6ea2759755c3a29dd2c476ba811ed05a9d0b5b42d3ce42f

Download Submit
memory/3076-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3076-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3076-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3076-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3076-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3076-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3420-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4144-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4144-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4144-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4144-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4144-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4592-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4592-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4592-3-0x0000000002B60000-0x0000000002B62000-memory.dmp

Filesize
8KB

Download
memory/4592-4-0x0000000002B80000-0x0000000002B82000-memory.dmp

Filesize
8KB

Download
memory/4592-6-0x0000000002BA0000-0x0000000002BA2000-memory.dmp

Filesize
8KB

Download
memory/4592-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5080-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5080-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5080-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads