modiloader | 8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1

Analysis

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

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
17-09-2024 08:27

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General

Target

8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe
Size

90KB
MD5

1c4034e8f8f8893eb29d874ae44b0210
SHA1

35de71a836c2ceea41832c6c37e6d8621ee781b6
SHA256

8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1
SHA512

713045a730d52dd6b8acfa5eb267426109f66c6dc9790fa6b64744127b86e6ed9d568689fce6bf2b77f750e1aa1daa9457846f682135d8c1d664787ac7c4a7bd
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/3620-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3620-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3620-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3620-63-0x0000000000400000-0x0000000000414000-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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe

Executes dropped EXE 3 IoCs

pid	Process
5004	csrsll.exe
4944	csrsll.exe
3620	csrsll.exe

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3484-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3484-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3756-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3756-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3484-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3756-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000800000002356e-29.dat	upx
behavioral2/memory/5004-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3756-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5004-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5004-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3620-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3620-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3620-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3620-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3620-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5004-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3756-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4944-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3620-63-0x0000000000400000-0x0000000000414000-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-1-5-21-2170637797-568393320-3232933035-1000\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 3484 set thread context of 3756	3484	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	94
PID 5004 set thread context of 4944	5004	csrsll.exe	103
PID 5004 set thread context of 3620	5004	csrsll.exe	104

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	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.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	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe
Token: SeDebugPrivilege	4944	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3484	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe
3756	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe
5004	csrsll.exe
4944	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3484 wrote to memory of 3756	3484	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	94
PID 3484 wrote to memory of 3756	3484	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	94
PID 3484 wrote to memory of 3756	3484	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	94
PID 3484 wrote to memory of 3756	3484	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	94
PID 3484 wrote to memory of 3756	3484	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	94
PID 3484 wrote to memory of 3756	3484	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	94
PID 3484 wrote to memory of 3756	3484	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	94
PID 3484 wrote to memory of 3756	3484	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	94
PID 3756 wrote to memory of 2888	3756	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	96
PID 3756 wrote to memory of 2888	3756	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	96
PID 3756 wrote to memory of 2888	3756	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	96
PID 2888 wrote to memory of 2388	2888	cmd.exe	99
PID 2888 wrote to memory of 2388	2888	cmd.exe	99
PID 2888 wrote to memory of 2388	2888	cmd.exe	99
PID 3756 wrote to memory of 5004	3756	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	100
PID 3756 wrote to memory of 5004	3756	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	100
PID 3756 wrote to memory of 5004	3756	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	100
PID 5004 wrote to memory of 4944	5004	csrsll.exe	103
PID 5004 wrote to memory of 4944	5004	csrsll.exe	103
PID 5004 wrote to memory of 4944	5004	csrsll.exe	103
PID 5004 wrote to memory of 4944	5004	csrsll.exe	103
PID 5004 wrote to memory of 4944	5004	csrsll.exe	103
PID 5004 wrote to memory of 4944	5004	csrsll.exe	103
PID 5004 wrote to memory of 4944	5004	csrsll.exe	103
PID 5004 wrote to memory of 4944	5004	csrsll.exe	103
PID 5004 wrote to memory of 3620	5004	csrsll.exe	104
PID 5004 wrote to memory of 3620	5004	csrsll.exe	104
PID 5004 wrote to memory of 3620	5004	csrsll.exe	104
PID 5004 wrote to memory of 3620	5004	csrsll.exe	104
PID 5004 wrote to memory of 3620	5004	csrsll.exe	104
PID 5004 wrote to memory of 3620	5004	csrsll.exe	104
PID 5004 wrote to memory of 3620	5004	csrsll.exe	104
PID 5004 wrote to memory of 3620	5004	csrsll.exe	104

C:\Users\Admin\AppData\Local\Temp\8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe
"C:\Users\Admin\AppData\Local\Temp\8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3484
- C:\Users\Admin\AppData\Local\Temp\8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe
  "C:\Users\Admin\AppData\Local\Temp\8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3756
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\IFJEM.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2888
  - - 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:2388
- - 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:5004
  - - 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:4944
  - - 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:3620

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4152,i,8548254608087149642,10333768245962368401,262144 --variations-seed-version --mojo-platform-channel-handle=4316 /prefetch:8
1⤵
PID:2280

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\IFJEM.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
eb613d7a5dd5c8baf1ede7d4f898d353

SHA1
610d6959ba70d624cf195fb9c6def6617a8c054e

SHA256
60e069ac2a0cfb1203b79128789472cc13c545fc1bc9c72bde363e9e28917b36

SHA512
c14ab83f98c42c3a5f1d9801ad422bbae64e3c0f880269767d18cbb26d405a17c9df4b790246e0b7dbb674d801c3c5a2418e39115f869448d17a609e7a4b8d5e

Download Submit
memory/3484-6-0x0000000002440000-0x0000000002442000-memory.dmp

Filesize
8KB

Download
memory/3484-5-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/3484-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3484-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3484-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3484-3-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/3620-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3620-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3620-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3620-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3620-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3620-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3756-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3756-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3756-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3756-59-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/3756-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3756-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4944-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5004-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5004-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5004-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5004-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads