modiloader | 843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a

Analysis

max time kernel
119s
max time network
121s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02-12-2024 20:04

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General

Target

843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a.exe
Size

90KB
MD5

45dbdb19392e37af2d784041f8cdbd25
SHA1

9085f37a0234f0f7509fb21d342ee178b7ea4270
SHA256

843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a
SHA512

6c7cdaa9c66678621adf7ab33fc81f3da2d16a513c31cbc3d2c260ec4f6985ebf039c2f7f1fa03ec2fe0ee4cc940215a423e2f790a1bd7948ce7a59da492a570
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oD1:0wjZQJvzZsgsW6/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/1060-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1060-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1060-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1060-61-0x0000000000400000-0x0000000000414000-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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a.exe

Executes dropped EXE 3 IoCs

pid	Process
3988	csrsll.exe
2328	csrsll.exe
1060	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 3012 set thread context of 2484	3012	843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a.exe	88
PID 3988 set thread context of 2328	3988	csrsll.exe	100
PID 3988 set thread context of 1060	3988	csrsll.exe	101

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3012-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3012-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2484-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2484-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3012-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2484-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023c84-28.dat	upx
behavioral2/memory/2484-38-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3988-39-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3988-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1060-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1060-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1060-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3988-54-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2484-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1060-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1060-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2328-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1060-61-0x0000000000400000-0x0000000000414000-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	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	843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe
Token: SeDebugPrivilege	2328	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3012	843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a.exe
2484	843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a.exe
3988	csrsll.exe
2328	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3012 wrote to memory of 2484	3012	843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a.exe	88
PID 3012 wrote to memory of 2484	3012	843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a.exe	88
PID 3012 wrote to memory of 2484	3012	843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a.exe	88
PID 3012 wrote to memory of 2484	3012	843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a.exe	88
PID 3012 wrote to memory of 2484	3012	843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a.exe	88
PID 3012 wrote to memory of 2484	3012	843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a.exe	88
PID 3012 wrote to memory of 2484	3012	843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a.exe	88
PID 3012 wrote to memory of 2484	3012	843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a.exe	88
PID 2484 wrote to memory of 964	2484	843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a.exe	91
PID 2484 wrote to memory of 964	2484	843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a.exe	91
PID 2484 wrote to memory of 964	2484	843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a.exe	91
PID 964 wrote to memory of 820	964	cmd.exe	95
PID 964 wrote to memory of 820	964	cmd.exe	95
PID 964 wrote to memory of 820	964	cmd.exe	95
PID 2484 wrote to memory of 3988	2484	843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a.exe	96
PID 2484 wrote to memory of 3988	2484	843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a.exe	96
PID 2484 wrote to memory of 3988	2484	843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a.exe	96
PID 3988 wrote to memory of 2328	3988	csrsll.exe	100
PID 3988 wrote to memory of 2328	3988	csrsll.exe	100
PID 3988 wrote to memory of 2328	3988	csrsll.exe	100
PID 3988 wrote to memory of 2328	3988	csrsll.exe	100
PID 3988 wrote to memory of 2328	3988	csrsll.exe	100
PID 3988 wrote to memory of 2328	3988	csrsll.exe	100
PID 3988 wrote to memory of 2328	3988	csrsll.exe	100
PID 3988 wrote to memory of 2328	3988	csrsll.exe	100
PID 3988 wrote to memory of 1060	3988	csrsll.exe	101
PID 3988 wrote to memory of 1060	3988	csrsll.exe	101
PID 3988 wrote to memory of 1060	3988	csrsll.exe	101
PID 3988 wrote to memory of 1060	3988	csrsll.exe	101
PID 3988 wrote to memory of 1060	3988	csrsll.exe	101
PID 3988 wrote to memory of 1060	3988	csrsll.exe	101
PID 3988 wrote to memory of 1060	3988	csrsll.exe	101
PID 3988 wrote to memory of 1060	3988	csrsll.exe	101

C:\Users\Admin\AppData\Local\Temp\843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a.exe
"C:\Users\Admin\AppData\Local\Temp\843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3012
- C:\Users\Admin\AppData\Local\Temp\843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a.exe
  "C:\Users\Admin\AppData\Local\Temp\843761a575d9c5fc62b458a08352f57ba61b14639fdc7727b3d1cf89e158ac7a.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2484
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\JNBEP.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:964
  - - 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:820
- - 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:3988
  - - 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:2328
  - - 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:1060

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\JNBEP.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
10c593bae994abe21aec5d200f912b6e

SHA1
7bd0c88ec96a5f41f8f8c937ef4ddb5427f8caff

SHA256
6f556292cc7835d001404cff3f533e29d78f5ff570aa90b7adddfd505e6c43dd

SHA512
c783895da502fed6c116affa414a198193b98745c422301e66d916dfb91f7fe3b9974578d13713209ad061d17af783ab25b2a2e070e7f74fb293a9838f720bf5

Download Submit
memory/1060-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1060-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1060-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1060-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1060-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1060-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2328-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2484-57-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/2484-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2484-38-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2484-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2484-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2484-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3012-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3012-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3012-5-0x00000000021D0000-0x00000000021D2000-memory.dmp

Filesize
8KB

Download
memory/3012-6-0x00000000021E0000-0x00000000021E2000-memory.dmp

Filesize
8KB

Download
memory/3012-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3012-3-0x00000000021B0000-0x00000000021B2000-memory.dmp

Filesize
8KB

Download
memory/3988-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3988-54-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3988-39-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads