modiloader | 557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897b

Analysis

max time kernel
120s
max time network
122s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
03/10/2024, 23:25

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General

Target

557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897bN.exe
Size

90KB
MD5

2fcdcc329c05e6be6eebec576f530100
SHA1

98247f8e3a688b21252fa026f6fc922ed62fc403
SHA256

557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897b
SHA512

7779407b0f2071042cd3cf3d7aefa1a119e52cf23e4d862c2e362e8e278545510e17e9bc00f8aa72edce16d2b2bc382c996faba0c84d48dce8b53d6537f6dc10
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/2344-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2344-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2344-58-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2344-63-0x0000000000400000-0x0000000000414000-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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897bN.exe

Executes dropped EXE 3 IoCs

pid	Process
2024	csrsll.exe
848	csrsll.exe
2344	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-1-5-21-2718105630-359604950-2820636825-1000\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 4336 set thread context of 4464	4336	557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897bN.exe	82
PID 2024 set thread context of 848	2024	csrsll.exe	92
PID 2024 set thread context of 2344	2024	csrsll.exe	93

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4336-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4336-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4464-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4464-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4464-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4336-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000900000002348b-29.dat	upx
behavioral2/memory/2024-37-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4464-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2024-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2024-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2344-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2344-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2344-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2344-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2024-54-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2344-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4464-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/848-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2344-63-0x0000000000400000-0x0000000000414000-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	557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897bN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897bN.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	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4336	557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897bN.exe
4464	557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897bN.exe
2024	csrsll.exe
848	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4336 wrote to memory of 4464	4336	557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897bN.exe	82
PID 4336 wrote to memory of 4464	4336	557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897bN.exe	82
PID 4336 wrote to memory of 4464	4336	557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897bN.exe	82
PID 4336 wrote to memory of 4464	4336	557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897bN.exe	82
PID 4336 wrote to memory of 4464	4336	557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897bN.exe	82
PID 4336 wrote to memory of 4464	4336	557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897bN.exe	82
PID 4336 wrote to memory of 4464	4336	557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897bN.exe	82
PID 4336 wrote to memory of 4464	4336	557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897bN.exe	82
PID 4464 wrote to memory of 1480	4464	557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897bN.exe	83
PID 4464 wrote to memory of 1480	4464	557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897bN.exe	83
PID 4464 wrote to memory of 1480	4464	557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897bN.exe	83
PID 1480 wrote to memory of 4264	1480	cmd.exe	86
PID 1480 wrote to memory of 4264	1480	cmd.exe	86
PID 1480 wrote to memory of 4264	1480	cmd.exe	86
PID 4464 wrote to memory of 2024	4464	557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897bN.exe	87
PID 4464 wrote to memory of 2024	4464	557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897bN.exe	87
PID 4464 wrote to memory of 2024	4464	557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897bN.exe	87
PID 2024 wrote to memory of 848	2024	csrsll.exe	92
PID 2024 wrote to memory of 848	2024	csrsll.exe	92
PID 2024 wrote to memory of 848	2024	csrsll.exe	92
PID 2024 wrote to memory of 848	2024	csrsll.exe	92
PID 2024 wrote to memory of 848	2024	csrsll.exe	92
PID 2024 wrote to memory of 848	2024	csrsll.exe	92
PID 2024 wrote to memory of 848	2024	csrsll.exe	92
PID 2024 wrote to memory of 848	2024	csrsll.exe	92
PID 2024 wrote to memory of 2344	2024	csrsll.exe	93
PID 2024 wrote to memory of 2344	2024	csrsll.exe	93
PID 2024 wrote to memory of 2344	2024	csrsll.exe	93
PID 2024 wrote to memory of 2344	2024	csrsll.exe	93
PID 2024 wrote to memory of 2344	2024	csrsll.exe	93
PID 2024 wrote to memory of 2344	2024	csrsll.exe	93
PID 2024 wrote to memory of 2344	2024	csrsll.exe	93
PID 2024 wrote to memory of 2344	2024	csrsll.exe	93

C:\Users\Admin\AppData\Local\Temp\557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897bN.exe
"C:\Users\Admin\AppData\Local\Temp\557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897bN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4336
- C:\Users\Admin\AppData\Local\Temp\557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897bN.exe
  "C:\Users\Admin\AppData\Local\Temp\557baf1f4e29683cc520f08738984c12f4c25d12faab38dc8ee7c08ba085897bN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4464
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\GXODN.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1480
  - - 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:4264
- - 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:2024
  - - 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:848
  - - 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:2344

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\GXODN.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
7b1cac5f708b5617f11cf0ffe2643030

SHA1
3faaab6ec6d4e594116c0302c45d94e310b48b05

SHA256
e861be263cf30a80fbe88878bee7b288dd041df418192fc2e47e53182ba7143b

SHA512
f562ccb7ab0b62fa55b6cd1423bf9a8d9ff0251328800c4512a8b7015c2e1f07ea5a836e4d9c3805643ebf51ecd1cb7c8c649ed13328c69bd286d744949b7958

Download Submit
memory/848-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2024-37-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2024-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2024-54-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2024-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2344-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2344-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2344-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2344-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2344-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2344-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4336-6-0x00000000021E0000-0x00000000021E2000-memory.dmp

Filesize
8KB

Download
memory/4336-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4336-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4336-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4336-4-0x00000000021B0000-0x00000000021B2000-memory.dmp

Filesize
8KB

Download
memory/4336-3-0x00000000021A0000-0x00000000021A2000-memory.dmp

Filesize
8KB

Download
memory/4464-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4464-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4464-59-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/4464-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4464-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4464-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads