modiloader | 5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364

Analysis

max time kernel
119s
max time network
117s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01/12/2024, 19:20

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General

Target

5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364N.exe
Size

90KB
MD5

629fcc5856fbc6584556cbe2c6b04470
SHA1

e328c77c159c76092857b12a7722df9094624ad4
SHA256

5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364
SHA512

0b96443e1970ad6fe8b7f100a094e94eb7a2ecb995339c7510ff9eb2192955880d5ecad12b2af8a6ad105a8a0f12518669bb1c10406bbcc33b1d0869d3af0b73
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDQ:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3K

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/3424-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3424-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3424-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3424-60-0x0000000000400000-0x0000000000414000-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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364N.exe

Executes dropped EXE 3 IoCs

pid	Process
1148	csrsll.exe
4728	csrsll.exe
3424	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-1-5-21-4089630652-1596403869-279772308-1000\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 1596 set thread context of 2596	1596	5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364N.exe	84
PID 1148 set thread context of 4728	1148	csrsll.exe	94
PID 1148 set thread context of 3424	1148	csrsll.exe	95

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1596-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1596-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2596-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2596-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2596-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1596-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023ca2-29.dat	upx
behavioral2/memory/2596-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1148-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1148-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3424-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3424-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3424-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3424-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3424-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1148-55-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2596-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4728-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3424-60-0x0000000000400000-0x0000000000414000-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	5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364N.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	5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364N.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe
Token: SeDebugPrivilege	4728	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1596	5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364N.exe
2596	5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364N.exe
1148	csrsll.exe
4728	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1596 wrote to memory of 2596	1596	5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364N.exe	84
PID 1596 wrote to memory of 2596	1596	5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364N.exe	84
PID 1596 wrote to memory of 2596	1596	5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364N.exe	84
PID 1596 wrote to memory of 2596	1596	5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364N.exe	84
PID 1596 wrote to memory of 2596	1596	5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364N.exe	84
PID 1596 wrote to memory of 2596	1596	5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364N.exe	84
PID 1596 wrote to memory of 2596	1596	5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364N.exe	84
PID 1596 wrote to memory of 2596	1596	5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364N.exe	84
PID 2596 wrote to memory of 1560	2596	5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364N.exe	85
PID 2596 wrote to memory of 1560	2596	5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364N.exe	85
PID 2596 wrote to memory of 1560	2596	5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364N.exe	85
PID 1560 wrote to memory of 4716	1560	cmd.exe	88
PID 1560 wrote to memory of 4716	1560	cmd.exe	88
PID 1560 wrote to memory of 4716	1560	cmd.exe	88
PID 2596 wrote to memory of 1148	2596	5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364N.exe	89
PID 2596 wrote to memory of 1148	2596	5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364N.exe	89
PID 2596 wrote to memory of 1148	2596	5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364N.exe	89
PID 1148 wrote to memory of 4728	1148	csrsll.exe	94
PID 1148 wrote to memory of 4728	1148	csrsll.exe	94
PID 1148 wrote to memory of 4728	1148	csrsll.exe	94
PID 1148 wrote to memory of 4728	1148	csrsll.exe	94
PID 1148 wrote to memory of 4728	1148	csrsll.exe	94
PID 1148 wrote to memory of 4728	1148	csrsll.exe	94
PID 1148 wrote to memory of 4728	1148	csrsll.exe	94
PID 1148 wrote to memory of 4728	1148	csrsll.exe	94
PID 1148 wrote to memory of 3424	1148	csrsll.exe	95
PID 1148 wrote to memory of 3424	1148	csrsll.exe	95
PID 1148 wrote to memory of 3424	1148	csrsll.exe	95
PID 1148 wrote to memory of 3424	1148	csrsll.exe	95
PID 1148 wrote to memory of 3424	1148	csrsll.exe	95
PID 1148 wrote to memory of 3424	1148	csrsll.exe	95
PID 1148 wrote to memory of 3424	1148	csrsll.exe	95
PID 1148 wrote to memory of 3424	1148	csrsll.exe	95

C:\Users\Admin\AppData\Local\Temp\5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364N.exe
"C:\Users\Admin\AppData\Local\Temp\5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1596
- C:\Users\Admin\AppData\Local\Temp\5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364N.exe
  "C:\Users\Admin\AppData\Local\Temp\5b2f2cfe8aac6417b8bc4c912594b6d36de05d7fea7510eccb0f91b5173c7364N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2596
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\WXAKP.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1560
  - - 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:4716
- - 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:1148
  - - 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:4728
  - - 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:3424

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\WXAKP.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
b1719fbf671dea2684a06e0dc35535b5

SHA1
859af28e26c7149b15904cfd4cf99732b27496f9

SHA256
a331c612ec34c83e7ec57e00e14a5332bade788d7ae37c0012cafe8757091eb1

SHA512
e6b75182c5f98bb82f930be9e3189bcf28c51e07912ef08aac067e5f59dc50020cd7df743ce544ca51afad3b39dca627170a0c9c0a9c85043c7f04d563a5e5ba

Download Submit
memory/1148-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1148-55-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1148-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1596-3-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/1596-4-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/1596-6-0x0000000002330000-0x0000000002332000-memory.dmp

Filesize
8KB

Download
memory/1596-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1596-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1596-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2596-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2596-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2596-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2596-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2596-57-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/2596-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3424-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3424-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3424-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3424-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3424-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3424-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4728-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads