modiloader | 999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21-12-2024 02:55

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General

Target

999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655.exe
Size

90KB
MD5

4055189bf09c4a737a87f84ba1db0064
SHA1

3312c0f0b3e1d3b3578837cc734cf6631588c784
SHA256

999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655
SHA512

c3a009aa17cff60df32be5ae115f825afc478cc44cf360a5226b8485396f29465865ac5653ef710b5f4cc56389bc5f961ba5838c3fb3ecd87d9fdfd780a14f42
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDh:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3T

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 3 IoCs

resource	yara_rule
behavioral2/memory/1828-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1828-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1828-61-0x0000000000400000-0x0000000000414000-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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655.exe

Executes dropped EXE 3 IoCs

pid	Process
5052	csrsll.exe
460	csrsll.exe
1828	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-1-5-21-2878641211-696417878-3864914810-1000\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 3204 set thread context of 1488	3204	999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655.exe	84
PID 5052 set thread context of 460	5052	csrsll.exe	101
PID 5052 set thread context of 1828	5052	csrsll.exe	102

UPX packed file 18 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3204-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3204-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1488-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1488-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1488-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3204-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b000000023b60-29.dat	upx
behavioral2/memory/5052-37-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1488-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5052-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1828-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1828-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1828-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1828-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5052-51-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1488-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1828-61-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/460-62-0x0000000000400000-0x000000000040B000-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	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	999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3204	999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655.exe
1488	999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655.exe
5052	csrsll.exe
460	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3204 wrote to memory of 1488	3204	999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655.exe	84
PID 3204 wrote to memory of 1488	3204	999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655.exe	84
PID 3204 wrote to memory of 1488	3204	999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655.exe	84
PID 3204 wrote to memory of 1488	3204	999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655.exe	84
PID 3204 wrote to memory of 1488	3204	999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655.exe	84
PID 3204 wrote to memory of 1488	3204	999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655.exe	84
PID 3204 wrote to memory of 1488	3204	999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655.exe	84
PID 3204 wrote to memory of 1488	3204	999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655.exe	84
PID 1488 wrote to memory of 4712	1488	999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655.exe	85
PID 1488 wrote to memory of 4712	1488	999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655.exe	85
PID 1488 wrote to memory of 4712	1488	999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655.exe	85
PID 4712 wrote to memory of 3280	4712	cmd.exe	89
PID 4712 wrote to memory of 3280	4712	cmd.exe	89
PID 4712 wrote to memory of 3280	4712	cmd.exe	89
PID 1488 wrote to memory of 5052	1488	999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655.exe	91
PID 1488 wrote to memory of 5052	1488	999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655.exe	91
PID 1488 wrote to memory of 5052	1488	999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655.exe	91
PID 5052 wrote to memory of 460	5052	csrsll.exe	101
PID 5052 wrote to memory of 460	5052	csrsll.exe	101
PID 5052 wrote to memory of 460	5052	csrsll.exe	101
PID 5052 wrote to memory of 460	5052	csrsll.exe	101
PID 5052 wrote to memory of 460	5052	csrsll.exe	101
PID 5052 wrote to memory of 460	5052	csrsll.exe	101
PID 5052 wrote to memory of 460	5052	csrsll.exe	101
PID 5052 wrote to memory of 460	5052	csrsll.exe	101
PID 5052 wrote to memory of 1828	5052	csrsll.exe	102
PID 5052 wrote to memory of 1828	5052	csrsll.exe	102
PID 5052 wrote to memory of 1828	5052	csrsll.exe	102
PID 5052 wrote to memory of 1828	5052	csrsll.exe	102
PID 5052 wrote to memory of 1828	5052	csrsll.exe	102
PID 5052 wrote to memory of 1828	5052	csrsll.exe	102
PID 5052 wrote to memory of 1828	5052	csrsll.exe	102
PID 5052 wrote to memory of 1828	5052	csrsll.exe	102

C:\Users\Admin\AppData\Local\Temp\999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655.exe
"C:\Users\Admin\AppData\Local\Temp\999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3204
- C:\Users\Admin\AppData\Local\Temp\999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655.exe
  "C:\Users\Admin\AppData\Local\Temp\999b3e7f9a470dbd00a8d452f5c66a6df88648b8e279dbcaaa1dea8c78d06655.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1488
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\RVQYM.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4712
  - - 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:3280
- - 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:5052
  - - 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:460
  - - 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:1828

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\RVQYM.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
98101c0cfde91e858c5b7e79ab838ae1

SHA1
a42e2bcfc32e9d658e64a01e9fe5f2db654cbaf9

SHA256
e8bd33f8ed03e9272b54a9df11aa25335225ccb120e2fd204908f3fa4aac253e

SHA512
d7545b9c79c123018d50c59beba672a07230bdcc371d17965bad1d502c246202eb38209b11855aed634952666e2e21d2b968467d82592df57e6cf002ac064b21

Download Submit
memory/460-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1488-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1488-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1488-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1488-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1488-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1828-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1828-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1828-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1828-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1828-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3204-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3204-6-0x0000000002950000-0x0000000002952000-memory.dmp

Filesize
8KB

Download
memory/3204-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3204-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3204-4-0x0000000002930000-0x0000000002932000-memory.dmp

Filesize
8KB

Download
memory/3204-3-0x0000000002920000-0x0000000002922000-memory.dmp

Filesize
8KB

Download
memory/5052-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5052-37-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5052-51-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads