modiloader | 33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978

Analysis

max time kernel
150s
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
18-12-2024 20:41

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General

Target

33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978.exe
Size

326KB
MD5

320bc2c07a5cf253d412cf5d574030e0
SHA1

f8ac038ca724ab59184f5d5c0e1316906912c73c
SHA256

33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978
SHA512

d376bc0235ee11c771bdc672a354e81c51279b82e4ebeca6bc9ccefb9430f1ea16e437f0425b63445f21eb4464313921e1250164a99a0b9d769b6f3dd9f5b206
SSDEEP

3072:ce2A0wxDqUpM5scww4chO+O1BmP5DG0sg3i4XZ9WvDZHwdRX/L+gP38XVW:csxD5cwohO+O1sVG0/pZ6iPC8t

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/2064-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2064-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2064-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2064-61-0x0000000000400000-0x0000000000414000-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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978.exe

Executes dropped EXE 3 IoCs

pid	Process
4484	csrsll.exe
816	csrsll.exe
2064	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-1-5-21-4050598569-1597076380-177084960-1000\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 5088 set thread context of 2720	5088	33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978.exe	86
PID 4484 set thread context of 816	4484	csrsll.exe	95
PID 4484 set thread context of 2064	4484	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5088-0-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/5088-4-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/2720-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2720-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2720-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5088-12-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/files/0x0008000000023cc4-28.dat	upx
behavioral2/memory/2720-38-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4484-39-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4484-40-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/2064-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2064-43-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2064-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4484-57-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/2064-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2064-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2720-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/816-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2064-61-0x0000000000400000-0x0000000000414000-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	33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe
Token: SeDebugPrivilege	816	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
5088	33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978.exe
2720	33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978.exe
4484	csrsll.exe
816	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 5088 wrote to memory of 2720	5088	33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978.exe	86
PID 5088 wrote to memory of 2720	5088	33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978.exe	86
PID 5088 wrote to memory of 2720	5088	33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978.exe	86
PID 5088 wrote to memory of 2720	5088	33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978.exe	86
PID 5088 wrote to memory of 2720	5088	33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978.exe	86
PID 5088 wrote to memory of 2720	5088	33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978.exe	86
PID 5088 wrote to memory of 2720	5088	33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978.exe	86
PID 5088 wrote to memory of 2720	5088	33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978.exe	86
PID 2720 wrote to memory of 3964	2720	33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978.exe	87
PID 2720 wrote to memory of 3964	2720	33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978.exe	87
PID 2720 wrote to memory of 3964	2720	33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978.exe	87
PID 3964 wrote to memory of 4832	3964	cmd.exe	91
PID 3964 wrote to memory of 4832	3964	cmd.exe	91
PID 3964 wrote to memory of 4832	3964	cmd.exe	91
PID 2720 wrote to memory of 4484	2720	33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978.exe	92
PID 2720 wrote to memory of 4484	2720	33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978.exe	92
PID 2720 wrote to memory of 4484	2720	33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978.exe	92
PID 4484 wrote to memory of 816	4484	csrsll.exe	95
PID 4484 wrote to memory of 816	4484	csrsll.exe	95
PID 4484 wrote to memory of 816	4484	csrsll.exe	95
PID 4484 wrote to memory of 816	4484	csrsll.exe	95
PID 4484 wrote to memory of 816	4484	csrsll.exe	95
PID 4484 wrote to memory of 816	4484	csrsll.exe	95
PID 4484 wrote to memory of 816	4484	csrsll.exe	95
PID 4484 wrote to memory of 816	4484	csrsll.exe	95
PID 4484 wrote to memory of 2064	4484	csrsll.exe	96
PID 4484 wrote to memory of 2064	4484	csrsll.exe	96
PID 4484 wrote to memory of 2064	4484	csrsll.exe	96
PID 4484 wrote to memory of 2064	4484	csrsll.exe	96
PID 4484 wrote to memory of 2064	4484	csrsll.exe	96
PID 4484 wrote to memory of 2064	4484	csrsll.exe	96
PID 4484 wrote to memory of 2064	4484	csrsll.exe	96
PID 4484 wrote to memory of 2064	4484	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978.exe
"C:\Users\Admin\AppData\Local\Temp\33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5088
- C:\Users\Admin\AppData\Local\Temp\33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978.exe
  "C:\Users\Admin\AppData\Local\Temp\33d6734f0a1d5f742c3b3954b3beaf2a2dd58431636cb5edb6bfc14a98a7c978.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2720
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\ONHRY.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3964
  - - 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:4832
- - 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:4484
  - - 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:816
  - - 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:2064

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\ONHRY.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
326KB

MD5
ede54d5e08832303ac1c9cf274218cff

SHA1
56aa68c27aaa1e9d6616129a7f0bf37b5e91d98b

SHA256
1981ea40099cf62b3005316f33c397f8f3541a3f41e2a2c840502f14cd0c3005

SHA512
47cb5de3a9b184f73c353d51c0a5a4201567e5216809cf56046a4fc9b35543cdcd2c278f76d6812cf35ece7ae6952256c1c7ccc35d982cf64fa67a559fcda2b6

Download Submit
memory/816-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2064-43-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2064-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2064-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2064-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2064-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2064-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2720-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2720-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2720-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2720-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2720-38-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4484-39-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4484-40-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4484-57-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/5088-0-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/5088-6-0x0000000002330000-0x0000000002332000-memory.dmp

Filesize
8KB

Download
memory/5088-5-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/5088-4-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/5088-3-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/5088-12-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads