modiloader | a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05

Analysis

max time kernel
119s
max time network
119s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
29/11/2024, 07:34

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General

Target

a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05N.exe
Size

90KB
MD5

7fbc526cb9098cb0bd5e4b97375b8270
SHA1

cbcbdb3d0cbc7a39885fa570869ff7342463492a
SHA256

a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05
SHA512

79faa0d152eaa76449339efd464b8d408bbbbb739a961fae93453e5cac7b738a1ba0fb44086c9db4690eae273da5b41c865747fcd34483df8bfd314a88686725
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDW:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE38

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/5060-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5060-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5060-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5060-63-0x0000000000400000-0x0000000000414000-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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05N.exe

Executes dropped EXE 3 IoCs

pid	Process
2412	csrsll.exe
924	csrsll.exe
5060	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-1-5-21-1045960512-3948844814-3059691613-1000\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 4804 set thread context of 3624	4804	a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05N.exe	91
PID 2412 set thread context of 924	2412	csrsll.exe	101
PID 2412 set thread context of 5060	2412	csrsll.exe	102

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4804-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4804-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3624-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3624-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4804-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3624-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023c79-29.dat	upx
behavioral2/memory/3624-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2412-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2412-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5060-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5060-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5060-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2412-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5060-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5060-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3624-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/924-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5060-63-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05N.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4804	a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05N.exe
3624	a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05N.exe
2412	csrsll.exe
924	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4804 wrote to memory of 3624	4804	a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05N.exe	91
PID 4804 wrote to memory of 3624	4804	a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05N.exe	91
PID 4804 wrote to memory of 3624	4804	a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05N.exe	91
PID 4804 wrote to memory of 3624	4804	a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05N.exe	91
PID 4804 wrote to memory of 3624	4804	a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05N.exe	91
PID 4804 wrote to memory of 3624	4804	a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05N.exe	91
PID 4804 wrote to memory of 3624	4804	a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05N.exe	91
PID 4804 wrote to memory of 3624	4804	a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05N.exe	91
PID 3624 wrote to memory of 1608	3624	a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05N.exe	92
PID 3624 wrote to memory of 1608	3624	a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05N.exe	92
PID 3624 wrote to memory of 1608	3624	a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05N.exe	92
PID 1608 wrote to memory of 4272	1608	cmd.exe	96
PID 1608 wrote to memory of 4272	1608	cmd.exe	96
PID 1608 wrote to memory of 4272	1608	cmd.exe	96
PID 3624 wrote to memory of 2412	3624	a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05N.exe	97
PID 3624 wrote to memory of 2412	3624	a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05N.exe	97
PID 3624 wrote to memory of 2412	3624	a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05N.exe	97
PID 2412 wrote to memory of 924	2412	csrsll.exe	101
PID 2412 wrote to memory of 924	2412	csrsll.exe	101
PID 2412 wrote to memory of 924	2412	csrsll.exe	101
PID 2412 wrote to memory of 924	2412	csrsll.exe	101
PID 2412 wrote to memory of 924	2412	csrsll.exe	101
PID 2412 wrote to memory of 924	2412	csrsll.exe	101
PID 2412 wrote to memory of 924	2412	csrsll.exe	101
PID 2412 wrote to memory of 924	2412	csrsll.exe	101
PID 2412 wrote to memory of 5060	2412	csrsll.exe	102
PID 2412 wrote to memory of 5060	2412	csrsll.exe	102
PID 2412 wrote to memory of 5060	2412	csrsll.exe	102
PID 2412 wrote to memory of 5060	2412	csrsll.exe	102
PID 2412 wrote to memory of 5060	2412	csrsll.exe	102
PID 2412 wrote to memory of 5060	2412	csrsll.exe	102
PID 2412 wrote to memory of 5060	2412	csrsll.exe	102
PID 2412 wrote to memory of 5060	2412	csrsll.exe	102

C:\Users\Admin\AppData\Local\Temp\a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05N.exe
"C:\Users\Admin\AppData\Local\Temp\a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4804
- C:\Users\Admin\AppData\Local\Temp\a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05N.exe
  "C:\Users\Admin\AppData\Local\Temp\a43e75529e600a174c5c270757083f5e0f24457182bbcda0393b2c1adcc5ed05N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3624
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\RCBFX.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1608
  - - 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:4272
- - 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:2412
  - - 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:924
  - - 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:5060

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\RCBFX.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
10b8f7c39e746503b86986aa16beb023

SHA1
bede44febd94fdf4bdd94dfc61edf2fe633cc068

SHA256
b47db305056838653847db57bea0dc7e5ac6f2de0acf824f082893aa9b34cd04

SHA512
8a8d8ef709725eb26aaf51c9b3de7a1a34860043010741c39bf12e754dc6e89fb7d5cc9dee3b96c4b2ddb87d50370767031de0f7d1f5fcbb0a4e6eb306ac96f1

Download Submit
memory/924-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2412-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2412-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2412-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3624-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3624-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3624-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3624-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3624-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4804-4-0x0000000002A30000-0x0000000002A32000-memory.dmp

Filesize
8KB

Download
memory/4804-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4804-6-0x0000000002A50000-0x0000000002A52000-memory.dmp

Filesize
8KB

Download
memory/4804-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4804-3-0x0000000002A20000-0x0000000002A22000-memory.dmp

Filesize
8KB

Download
memory/4804-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5060-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5060-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5060-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5060-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5060-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5060-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads