modiloader | 6e0c4bade9ccac1c5c10d2e3a50889e994b8db5526b96c2e5fbb9b23a118f43b

Analysis

max time kernel
119s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
07/09/2024, 12:22

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General

Target

8fbec10b6d7e49afba583adccdc08ed0N.exe
Size

90KB
MD5

8fbec10b6d7e49afba583adccdc08ed0
SHA1

3fb5e3eddd72f5cd1676b004f7b1bcae1d263fb3
SHA256

6e0c4bade9ccac1c5c10d2e3a50889e994b8db5526b96c2e5fbb9b23a118f43b
SHA512

db0c00bf6be81ee2623cd4c5ef051ed14c25132fb110a017b60a14acc3705de738c98f3abda53bb67e81bb9788df1a0bd7854e17736852526483cc07c5f560e8
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 Second Stage 4 IoCs

resource	yara_rule
behavioral2/memory/4944-62-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4944-61-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4944-60-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4944-64-0x0000000000400000-0x0000000000414000-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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	8fbec10b6d7e49afba583adccdc08ed0N.exe

Executes dropped EXE 3 IoCs

pid	Process
3892	csrsll.exe
4712	csrsll.exe
4944	csrsll.exe

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1724-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1724-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2456-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2456-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2456-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1724-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b0000000233a1-29.dat	upx
behavioral2/memory/3892-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2456-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3892-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3892-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4944-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3892-51-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2456-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4944-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4944-62-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4944-61-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4944-60-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4712-63-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4944-64-0x0000000000400000-0x0000000000414000-memory.dmp	upx

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-1-5-21-1194130065-3471212556-1656947724-1000\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 1724 set thread context of 2456	1724	8fbec10b6d7e49afba583adccdc08ed0N.exe	90
PID 3892 set thread context of 4712	3892	csrsll.exe	99
PID 3892 set thread context of 4944	3892	csrsll.exe	100

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	8fbec10b6d7e49afba583adccdc08ed0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8fbec10b6d7e49afba583adccdc08ed0N.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	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe
Token: SeDebugPrivilege	4712	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1724	8fbec10b6d7e49afba583adccdc08ed0N.exe
2456	8fbec10b6d7e49afba583adccdc08ed0N.exe
3892	csrsll.exe
4712	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1724 wrote to memory of 2456	1724	8fbec10b6d7e49afba583adccdc08ed0N.exe	90
PID 1724 wrote to memory of 2456	1724	8fbec10b6d7e49afba583adccdc08ed0N.exe	90
PID 1724 wrote to memory of 2456	1724	8fbec10b6d7e49afba583adccdc08ed0N.exe	90
PID 1724 wrote to memory of 2456	1724	8fbec10b6d7e49afba583adccdc08ed0N.exe	90
PID 1724 wrote to memory of 2456	1724	8fbec10b6d7e49afba583adccdc08ed0N.exe	90
PID 1724 wrote to memory of 2456	1724	8fbec10b6d7e49afba583adccdc08ed0N.exe	90
PID 1724 wrote to memory of 2456	1724	8fbec10b6d7e49afba583adccdc08ed0N.exe	90
PID 1724 wrote to memory of 2456	1724	8fbec10b6d7e49afba583adccdc08ed0N.exe	90
PID 2456 wrote to memory of 4668	2456	8fbec10b6d7e49afba583adccdc08ed0N.exe	92
PID 2456 wrote to memory of 4668	2456	8fbec10b6d7e49afba583adccdc08ed0N.exe	92
PID 2456 wrote to memory of 4668	2456	8fbec10b6d7e49afba583adccdc08ed0N.exe	92
PID 4668 wrote to memory of 4732	4668	cmd.exe	95
PID 4668 wrote to memory of 4732	4668	cmd.exe	95
PID 4668 wrote to memory of 4732	4668	cmd.exe	95
PID 2456 wrote to memory of 3892	2456	8fbec10b6d7e49afba583adccdc08ed0N.exe	96
PID 2456 wrote to memory of 3892	2456	8fbec10b6d7e49afba583adccdc08ed0N.exe	96
PID 2456 wrote to memory of 3892	2456	8fbec10b6d7e49afba583adccdc08ed0N.exe	96
PID 3892 wrote to memory of 4712	3892	csrsll.exe	99
PID 3892 wrote to memory of 4712	3892	csrsll.exe	99
PID 3892 wrote to memory of 4712	3892	csrsll.exe	99
PID 3892 wrote to memory of 4712	3892	csrsll.exe	99
PID 3892 wrote to memory of 4712	3892	csrsll.exe	99
PID 3892 wrote to memory of 4712	3892	csrsll.exe	99
PID 3892 wrote to memory of 4712	3892	csrsll.exe	99
PID 3892 wrote to memory of 4712	3892	csrsll.exe	99
PID 3892 wrote to memory of 4944	3892	csrsll.exe	100
PID 3892 wrote to memory of 4944	3892	csrsll.exe	100
PID 3892 wrote to memory of 4944	3892	csrsll.exe	100
PID 3892 wrote to memory of 4944	3892	csrsll.exe	100
PID 3892 wrote to memory of 4944	3892	csrsll.exe	100
PID 3892 wrote to memory of 4944	3892	csrsll.exe	100
PID 3892 wrote to memory of 4944	3892	csrsll.exe	100
PID 3892 wrote to memory of 4944	3892	csrsll.exe	100

C:\Users\Admin\AppData\Local\Temp\8fbec10b6d7e49afba583adccdc08ed0N.exe
"C:\Users\Admin\AppData\Local\Temp\8fbec10b6d7e49afba583adccdc08ed0N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1724
- C:\Users\Admin\AppData\Local\Temp\8fbec10b6d7e49afba583adccdc08ed0N.exe
  "C:\Users\Admin\AppData\Local\Temp\8fbec10b6d7e49afba583adccdc08ed0N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2456
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\MUITJ.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4668
  - - 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:4732
- - 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:3892
  - - 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:4712
  - - 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:4944

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\MUITJ.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
d744c9114b70e6a3659dd98aba580251

SHA1
b8595c2f6c9ffa58d44ab42435b6bfe3386ec1bd

SHA256
27315b24cc846371ddb9ad52a71f25c42ddceaf931af2b2deb1bfb2dfcf45f65

SHA512
96078b030d45082d78b5d3752ea2c405011e5d582e897ddb950a8e49afc17e2e56476c8f9d054e1f988f3e793e413884aab7fadce1632a922eed84b183907ec2

Download Submit
memory/1724-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1724-3-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/1724-6-0x0000000002A90000-0x0000000002A92000-memory.dmp

Filesize
8KB

Download
memory/1724-5-0x0000000002A80000-0x0000000002A82000-memory.dmp

Filesize
8KB

Download
memory/1724-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1724-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2456-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2456-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2456-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2456-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2456-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3892-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3892-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3892-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3892-51-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4712-63-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4944-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4944-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4944-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4944-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4944-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4944-64-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads