modiloader | caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
05-12-2024 22:23

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General

Target

caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04.exe
Size

90KB
MD5

3a5c85aaa834e3f9fa5f7b1d9f866a33
SHA1

c497a3d089d67828dacc3217f562f5609a724d14
SHA256

caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04
SHA512

2530859cc1ceaf60f5c1bddaf44dbcd87f7ed19e0a0e6f029ffdd0853ade5efb3d1602b95d1977b6e7a33df10f980a8ec84dfb6fb68311340251997cc35aa206
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDq:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3c

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/2512-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2512-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2512-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2512-62-0x0000000000400000-0x0000000000414000-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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04.exe

Executes dropped EXE 3 IoCs

pid	Process
3672	csrsll.exe
5008	csrsll.exe
2512	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-1-5-21-940901362-3608833189-1915618603-1000\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 4812 set thread context of 1372	4812	caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04.exe	83
PID 3672 set thread context of 5008	3672	csrsll.exe	100
PID 3672 set thread context of 2512	3672	csrsll.exe	101

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4812-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4812-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1372-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1372-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1372-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4812-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023cd6-29.dat	upx
behavioral2/memory/1372-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3672-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3672-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2512-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2512-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2512-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3672-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2512-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2512-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1372-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5008-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2512-62-0x0000000000400000-0x0000000000414000-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	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	caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4812	caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04.exe
1372	caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04.exe
3672	csrsll.exe
5008	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4812 wrote to memory of 1372	4812	caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04.exe	83
PID 4812 wrote to memory of 1372	4812	caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04.exe	83
PID 4812 wrote to memory of 1372	4812	caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04.exe	83
PID 4812 wrote to memory of 1372	4812	caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04.exe	83
PID 4812 wrote to memory of 1372	4812	caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04.exe	83
PID 4812 wrote to memory of 1372	4812	caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04.exe	83
PID 4812 wrote to memory of 1372	4812	caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04.exe	83
PID 4812 wrote to memory of 1372	4812	caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04.exe	83
PID 1372 wrote to memory of 3096	1372	caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04.exe	86
PID 1372 wrote to memory of 3096	1372	caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04.exe	86
PID 1372 wrote to memory of 3096	1372	caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04.exe	86
PID 3096 wrote to memory of 2832	3096	cmd.exe	90
PID 3096 wrote to memory of 2832	3096	cmd.exe	90
PID 3096 wrote to memory of 2832	3096	cmd.exe	90
PID 1372 wrote to memory of 3672	1372	caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04.exe	91
PID 1372 wrote to memory of 3672	1372	caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04.exe	91
PID 1372 wrote to memory of 3672	1372	caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04.exe	91
PID 3672 wrote to memory of 5008	3672	csrsll.exe	100
PID 3672 wrote to memory of 5008	3672	csrsll.exe	100
PID 3672 wrote to memory of 5008	3672	csrsll.exe	100
PID 3672 wrote to memory of 5008	3672	csrsll.exe	100
PID 3672 wrote to memory of 5008	3672	csrsll.exe	100
PID 3672 wrote to memory of 5008	3672	csrsll.exe	100
PID 3672 wrote to memory of 5008	3672	csrsll.exe	100
PID 3672 wrote to memory of 5008	3672	csrsll.exe	100
PID 3672 wrote to memory of 2512	3672	csrsll.exe	101
PID 3672 wrote to memory of 2512	3672	csrsll.exe	101
PID 3672 wrote to memory of 2512	3672	csrsll.exe	101
PID 3672 wrote to memory of 2512	3672	csrsll.exe	101
PID 3672 wrote to memory of 2512	3672	csrsll.exe	101
PID 3672 wrote to memory of 2512	3672	csrsll.exe	101
PID 3672 wrote to memory of 2512	3672	csrsll.exe	101
PID 3672 wrote to memory of 2512	3672	csrsll.exe	101

C:\Users\Admin\AppData\Local\Temp\caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04.exe
"C:\Users\Admin\AppData\Local\Temp\caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4812
- C:\Users\Admin\AppData\Local\Temp\caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04.exe
  "C:\Users\Admin\AppData\Local\Temp\caf543440012c9c40ca431ca2992ff7b896fa6d163c3af237679fbe06fb85b04.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1372
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\YCMRY.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3096
  - - 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:2832
- - 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:3672
  - - 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:5008
  - - 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:2512

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\YCMRY.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
deae92d10e432cc0ce219889bcdd9bd5

SHA1
55cc10509982f04713aa5b7ca31e886615963ed5

SHA256
8fb4f31cc9bdbca54a822c8ef4902f5ac9e76dd2299a3194bf320cff591c3e54

SHA512
9fa60de9d121a15c2f0ac7a20042228678aa6e1fd90acdbd8c0d072351208e1fc4cfcf5d829677659a4c9cbdfdb599fb2dcbf94636971e972352f122e4715d67

Download Submit
memory/1372-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1372-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/1372-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1372-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1372-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1372-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2512-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2512-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2512-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2512-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2512-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2512-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3672-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3672-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3672-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4812-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4812-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4812-6-0x0000000002440000-0x0000000002442000-memory.dmp

Filesize
8KB

Download
memory/4812-4-0x0000000002420000-0x0000000002422000-memory.dmp

Filesize
8KB

Download
memory/4812-3-0x0000000002410000-0x0000000002412000-memory.dmp

Filesize
8KB

Download
memory/4812-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5008-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads