modiloader | f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35

Analysis

max time kernel
120s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17-12-2024 22:02

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General

Target

f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35N.exe
Size

90KB
MD5

c9e1d7a195ed1335dfa703be42b930e0
SHA1

db46e529a2d5368f905e31cbd3dca3950da14b1a
SHA256

f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35
SHA512

b9c7e31e213bec7c96aab055839eb622e627f11ebd8158ccf69a14b523cfed8b5650d7db08b854c4e12b5bae5642a2d97110f91f0669e7474449cb271cd4e89f
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/4620-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4620-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4620-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4620-62-0x0000000000400000-0x0000000000414000-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	f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35N.exe

Executes dropped EXE 3 IoCs

pid	Process
1600	csrsll.exe
4196	csrsll.exe
4620	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 1828 set thread context of 2436	1828	f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35N.exe	85
PID 1600 set thread context of 4196	1600	csrsll.exe	99
PID 1600 set thread context of 4620	1600	csrsll.exe	100

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1828-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1828-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2436-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2436-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2436-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1828-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000d000000023a72-29.dat	upx
behavioral2/memory/1600-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2436-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1600-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1600-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4620-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4620-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4620-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4620-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4620-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1600-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2436-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4196-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4620-62-0x0000000000400000-0x0000000000414000-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	f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35N.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	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe
Token: SeDebugPrivilege	4196	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1828	f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35N.exe
2436	f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35N.exe
1600	csrsll.exe
4196	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1828 wrote to memory of 2436	1828	f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35N.exe	85
PID 1828 wrote to memory of 2436	1828	f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35N.exe	85
PID 1828 wrote to memory of 2436	1828	f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35N.exe	85
PID 1828 wrote to memory of 2436	1828	f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35N.exe	85
PID 1828 wrote to memory of 2436	1828	f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35N.exe	85
PID 1828 wrote to memory of 2436	1828	f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35N.exe	85
PID 1828 wrote to memory of 2436	1828	f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35N.exe	85
PID 1828 wrote to memory of 2436	1828	f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35N.exe	85
PID 2436 wrote to memory of 4344	2436	f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35N.exe	86
PID 2436 wrote to memory of 4344	2436	f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35N.exe	86
PID 2436 wrote to memory of 4344	2436	f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35N.exe	86
PID 4344 wrote to memory of 4232	4344	cmd.exe	90
PID 4344 wrote to memory of 4232	4344	cmd.exe	90
PID 4344 wrote to memory of 4232	4344	cmd.exe	90
PID 2436 wrote to memory of 1600	2436	f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35N.exe	91
PID 2436 wrote to memory of 1600	2436	f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35N.exe	91
PID 2436 wrote to memory of 1600	2436	f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35N.exe	91
PID 1600 wrote to memory of 4196	1600	csrsll.exe	99
PID 1600 wrote to memory of 4196	1600	csrsll.exe	99
PID 1600 wrote to memory of 4196	1600	csrsll.exe	99
PID 1600 wrote to memory of 4196	1600	csrsll.exe	99
PID 1600 wrote to memory of 4196	1600	csrsll.exe	99
PID 1600 wrote to memory of 4196	1600	csrsll.exe	99
PID 1600 wrote to memory of 4196	1600	csrsll.exe	99
PID 1600 wrote to memory of 4196	1600	csrsll.exe	99
PID 1600 wrote to memory of 4620	1600	csrsll.exe	100
PID 1600 wrote to memory of 4620	1600	csrsll.exe	100
PID 1600 wrote to memory of 4620	1600	csrsll.exe	100
PID 1600 wrote to memory of 4620	1600	csrsll.exe	100
PID 1600 wrote to memory of 4620	1600	csrsll.exe	100
PID 1600 wrote to memory of 4620	1600	csrsll.exe	100
PID 1600 wrote to memory of 4620	1600	csrsll.exe	100
PID 1600 wrote to memory of 4620	1600	csrsll.exe	100

C:\Users\Admin\AppData\Local\Temp\f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35N.exe
"C:\Users\Admin\AppData\Local\Temp\f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1828
- C:\Users\Admin\AppData\Local\Temp\f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35N.exe
  "C:\Users\Admin\AppData\Local\Temp\f43deb54d883aa930d08e55f63fd59bb48939abcfcc15d4250d6902bca274d35N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2436
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\VSGSD.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4344
  - - 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:4232
- - 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:1600
  - - 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:4196
  - - 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:4620

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\VSGSD.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
08614ecbffc89a1ddee8c17c1a3810b2

SHA1
d457a022a8ab401eb73dcfb0a1cfb65eeb940cf0

SHA256
aaaed1b4f988749458e1bbf4b3fbbd0499989d24b93611137d59b23495767d7b

SHA512
26379551f072e9d43b5deb5c00147e298075b629c27001adfe085678101a28b0b9318495c443355a101b1109b9039590efd0cc8140177e088333879eb5095885

Download Submit
memory/1600-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1600-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1600-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1600-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1828-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1828-3-0x00000000021B0000-0x00000000021B2000-memory.dmp

Filesize
8KB

Download
memory/1828-6-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/1828-5-0x00000000022E0000-0x00000000022E2000-memory.dmp

Filesize
8KB

Download
memory/1828-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1828-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2436-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2436-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2436-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2436-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2436-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/2436-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4196-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4620-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4620-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4620-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4620-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4620-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4620-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads