modiloader | 8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1

Analysis

max time kernel
149s
max time network
151s
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 19:33

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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/3264-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3264-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3264-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3264-62-0x0000000000400000-0x0000000000414000-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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe

Executes dropped EXE 3 IoCs

pid	Process
3188	csrsll.exe
460	csrsll.exe
3264	csrsll.exe

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4952-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4952-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3656-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3656-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3656-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4952-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000800000002343a-28.dat	upx
behavioral2/memory/3188-35-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3656-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3188-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3188-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3264-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3264-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3264-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3264-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3188-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3264-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3656-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/460-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3264-62-0x0000000000400000-0x0000000000414000-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-1-5-21-656926755-4116854191-210765258-1000\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 4952 set thread context of 3656	4952	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	87
PID 3188 set thread context of 460	3188	csrsll.exe	95
PID 3188 set thread context of 3264	3188	csrsll.exe	96

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	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe
Token: SeDebugPrivilege	460	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4952	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe
3656	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe
3188	csrsll.exe
460	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4952 wrote to memory of 3656	4952	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	87
PID 4952 wrote to memory of 3656	4952	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	87
PID 4952 wrote to memory of 3656	4952	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	87
PID 4952 wrote to memory of 3656	4952	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	87
PID 4952 wrote to memory of 3656	4952	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	87
PID 4952 wrote to memory of 3656	4952	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	87
PID 4952 wrote to memory of 3656	4952	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	87
PID 4952 wrote to memory of 3656	4952	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	87
PID 3656 wrote to memory of 2096	3656	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	90
PID 3656 wrote to memory of 2096	3656	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	90
PID 3656 wrote to memory of 2096	3656	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	90
PID 2096 wrote to memory of 3392	2096	cmd.exe	93
PID 2096 wrote to memory of 3392	2096	cmd.exe	93
PID 2096 wrote to memory of 3392	2096	cmd.exe	93
PID 3656 wrote to memory of 3188	3656	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	94
PID 3656 wrote to memory of 3188	3656	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	94
PID 3656 wrote to memory of 3188	3656	8bcbc5e77b31dfb9bb90877758d7c1498febe5bbefe75ec30ee07c2a144c37f1N.exe	94
PID 3188 wrote to memory of 460	3188	csrsll.exe	95
PID 3188 wrote to memory of 460	3188	csrsll.exe	95
PID 3188 wrote to memory of 460	3188	csrsll.exe	95
PID 3188 wrote to memory of 460	3188	csrsll.exe	95
PID 3188 wrote to memory of 460	3188	csrsll.exe	95
PID 3188 wrote to memory of 460	3188	csrsll.exe	95
PID 3188 wrote to memory of 460	3188	csrsll.exe	95
PID 3188 wrote to memory of 460	3188	csrsll.exe	95
PID 3188 wrote to memory of 3264	3188	csrsll.exe	96
PID 3188 wrote to memory of 3264	3188	csrsll.exe	96
PID 3188 wrote to memory of 3264	3188	csrsll.exe	96
PID 3188 wrote to memory of 3264	3188	csrsll.exe	96
PID 3188 wrote to memory of 3264	3188	csrsll.exe	96
PID 3188 wrote to memory of 3264	3188	csrsll.exe	96
PID 3188 wrote to memory of 3264	3188	csrsll.exe	96
PID 3188 wrote to memory of 3264	3188	csrsll.exe	96

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:4952
- 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:3656
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\QEBPY.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2096
  - - 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:3392
- - 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:3188
  - - 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:460
  - - 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:3264

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\QEBPY.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
38d2939026dd0c3ba934fa1e444e5b72

SHA1
a69caa3a4346ce7d0e63e263b03a5d49879d1f6c

SHA256
1f370446e879eaf050830e66a4be9ae552bd179276f229b7ed967e11196d5100

SHA512
19df0c18f709d48459de34029a093cc5dedb463c3a5ed313f30c20abb79ff3eef11d1bee1b1dd8c07bd63ef50ccd08504ecd780d72b942ce6aaa52b00fac233e

Download Submit
memory/460-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3188-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3188-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3188-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3188-35-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3264-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3264-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3264-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3264-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3264-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3264-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3656-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3656-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3656-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3656-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3656-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4952-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4952-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4952-5-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/4952-6-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/4952-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4952-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads