modiloader | 42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29

Analysis

max time kernel
118s
max time network
118s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
07-11-2024 14:44

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General

Target

42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29N.exe
Size

90KB
MD5

491e6fc77ec6e2d773013fe5a4d03060
SHA1

713075d1869017f97f0ec435827cd1584bcd3e22
SHA256

42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29
SHA512

000b4b7d5f161e34a408e56b3f240fd9850b60b634ec34546311f84001e1dc0b1cdd4b137193f6e01bbed8c3b02d7bf34e3cd47f4a8cbbb68e80de55d88f8227
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDK:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3Y

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/5000-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5000-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5000-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5000-64-0x0000000000400000-0x0000000000414000-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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29N.exe

Executes dropped EXE 3 IoCs

pid	Process
2028	csrsll.exe
5088	csrsll.exe
5000	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-1-5-21-493223053-2004649691-1575712786-1000\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 960 set thread context of 452	960	42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29N.exe	94
PID 2028 set thread context of 5088	2028	csrsll.exe	104
PID 2028 set thread context of 5000	2028	csrsll.exe	105

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/960-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/960-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/452-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/452-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/452-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/960-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000f000000023a73-30.dat	upx
behavioral2/memory/2028-37-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/452-41-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2028-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2028-43-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5000-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5000-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5000-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5000-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5000-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2028-59-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/452-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5088-63-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5000-64-0x0000000000400000-0x0000000000414000-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	42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29N.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	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe
Token: SeDebugPrivilege	5088	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
960	42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29N.exe
452	42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29N.exe
2028	csrsll.exe
5088	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 960 wrote to memory of 452	960	42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29N.exe	94
PID 960 wrote to memory of 452	960	42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29N.exe	94
PID 960 wrote to memory of 452	960	42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29N.exe	94
PID 960 wrote to memory of 452	960	42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29N.exe	94
PID 960 wrote to memory of 452	960	42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29N.exe	94
PID 960 wrote to memory of 452	960	42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29N.exe	94
PID 960 wrote to memory of 452	960	42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29N.exe	94
PID 960 wrote to memory of 452	960	42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29N.exe	94
PID 452 wrote to memory of 4464	452	42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29N.exe	98
PID 452 wrote to memory of 4464	452	42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29N.exe	98
PID 452 wrote to memory of 4464	452	42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29N.exe	98
PID 4464 wrote to memory of 1692	4464	cmd.exe	101
PID 4464 wrote to memory of 1692	4464	cmd.exe	101
PID 4464 wrote to memory of 1692	4464	cmd.exe	101
PID 452 wrote to memory of 2028	452	42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29N.exe	102
PID 452 wrote to memory of 2028	452	42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29N.exe	102
PID 452 wrote to memory of 2028	452	42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29N.exe	102
PID 2028 wrote to memory of 5088	2028	csrsll.exe	104
PID 2028 wrote to memory of 5088	2028	csrsll.exe	104
PID 2028 wrote to memory of 5088	2028	csrsll.exe	104
PID 2028 wrote to memory of 5088	2028	csrsll.exe	104
PID 2028 wrote to memory of 5088	2028	csrsll.exe	104
PID 2028 wrote to memory of 5088	2028	csrsll.exe	104
PID 2028 wrote to memory of 5088	2028	csrsll.exe	104
PID 2028 wrote to memory of 5088	2028	csrsll.exe	104
PID 2028 wrote to memory of 5000	2028	csrsll.exe	105
PID 2028 wrote to memory of 5000	2028	csrsll.exe	105
PID 2028 wrote to memory of 5000	2028	csrsll.exe	105
PID 2028 wrote to memory of 5000	2028	csrsll.exe	105
PID 2028 wrote to memory of 5000	2028	csrsll.exe	105
PID 2028 wrote to memory of 5000	2028	csrsll.exe	105
PID 2028 wrote to memory of 5000	2028	csrsll.exe	105
PID 2028 wrote to memory of 5000	2028	csrsll.exe	105

C:\Users\Admin\AppData\Local\Temp\42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29N.exe
"C:\Users\Admin\AppData\Local\Temp\42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:960
- C:\Users\Admin\AppData\Local\Temp\42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29N.exe
  "C:\Users\Admin\AppData\Local\Temp\42c09081fcd817ff3463d7c1336543767dc4006d4b09d0b5c62e5df0acfd4b29N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:452
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\WDMWU.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4464
  - - 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:1692
- - 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:2028
  - - 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:5088
  - - 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:5000

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\WDMWU.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
4d5b5ad3321a5ea3e5fdd0b6d012f6c3

SHA1
3e3de91c6e8369231a4ac8ffe65670d3ecc028d6

SHA256
75cc31e82f120b095b40aa11614a05064a060b99b9ec9d6ab9b01b7cea19263e

SHA512
6b8a25af13f41223c167effb0041b213ba26425fd4f5648f5ffa6387ec5953984f994fe795b455c6551d36be6d7c55888ae3b617d9737c2c6b079f1666aa1e6e

Download Submit
memory/452-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/452-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/452-41-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/452-60-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/452-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/452-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/960-6-0x0000000002330000-0x0000000002332000-memory.dmp

Filesize
8KB

Download
memory/960-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/960-4-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/960-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/960-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/960-7-0x0000000002340000-0x0000000002342000-memory.dmp

Filesize
8KB

Download
memory/960-3-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/2028-37-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2028-59-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2028-43-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2028-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5000-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5000-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5000-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5000-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5000-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5000-64-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5088-63-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads