modiloader | c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be

General

Target

c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
Size

982KB
MD5

8d4ca9867e0f2f59057a0a5ab23442de
SHA1

74aaa823e441bcd0e1075652bce2c234f702f8cf
SHA256

c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be
SHA512

40c0650470360868cac3624cabbfa7ed7ccbb0954e5f80866825aa87d9a61aca5c6af0d8d2db8617fe1f2265938beb7b6dbf268774de95d5dd0544f484cfe5ba
SSDEEP

24576:wvh/9klHiSFnRdP3QYSel9Z+m8a6rsYShuOAq:gh87j4ax6ghuw

Score

10^/10

modiloader evasion persistence trojan

Malware Config

Signatures

ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader
UAC bypass 3 TTPs 1 IoCs
evasion trojan

Bypass User Account Control
T1088

Disabling Security Tools
T1089

Modify Registry
T1112

Processes:

mstwain32.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" mstwain32.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	mstwain32.exe

ModiLoader Second Stage 15 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1996-61-0x0000000000400000-0x0000000000444000-memory.dmp	modiloader_stage2
behavioral1/memory/1996-63-0x0000000000400000-0x0000000000444000-memory.dmp	modiloader_stage2
behavioral1/memory/1996-65-0x0000000000400000-0x0000000000444000-memory.dmp	modiloader_stage2
behavioral1/memory/1996-66-0x0000000000400000-0x0000000000444000-memory.dmp	modiloader_stage2
behavioral1/memory/1996-68-0x0000000000400000-0x0000000000444000-memory.dmp	modiloader_stage2
behavioral1/memory/1996-71-0x0000000000430464-mapping.dmp	modiloader_stage2
behavioral1/memory/1996-70-0x0000000000400000-0x0000000000444000-memory.dmp	modiloader_stage2
behavioral1/memory/1996-72-0x0000000000400000-0x0000000000444000-memory.dmp	modiloader_stage2
behavioral1/memory/1996-75-0x0000000000400000-0x0000000000444000-memory.dmp	modiloader_stage2
behavioral1/memory/1996-76-0x0000000000400000-0x0000000000444000-memory.dmp	modiloader_stage2
behavioral1/memory/1996-79-0x0000000000400000-0x0000000000444000-memory.dmp	modiloader_stage2
behavioral1/memory/1224-99-0x0000000000430464-mapping.dmp	modiloader_stage2
behavioral1/memory/1224-104-0x0000000000400000-0x0000000000444000-memory.dmp	modiloader_stage2
behavioral1/memory/1224-105-0x0000000000400000-0x0000000000444000-memory.dmp	modiloader_stage2
behavioral1/memory/1224-108-0x0000000000400000-0x0000000000444000-memory.dmp	modiloader_stage2

Executes dropped EXE 2 IoCs

Processes:

mstwain32.exemstwain32.exe

pid process

1836 mstwain32.exe
1224 mstwain32.exe

pid	process
1836	mstwain32.exe
1224	mstwain32.exe

Checks BIOS information in registry 2 TTPs 4 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exemstwain32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	mstwain32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	mstwain32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

mstwain32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\	mstwain32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\mstwain32 = "C:\\Windows\\mstwain32.exe"	mstwain32.exe

Checks whether UAC is enabled 1 TTPs 3 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exemstwain32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	mstwain32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	mstwain32.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exemstwain32.exe

description	pid	process	target process
PID 1400 set thread context of 1996	1400	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
PID 1836 set thread context of 1224	1836	mstwain32.exe	mstwain32.exe

Drops file in Windows directory 3 IoCs

Processes:

c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exemstwain32.exe

description	ioc	process
File created	C:\Windows\mstwain32.exe	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
File opened for modification	C:\Windows\mstwain32.exe	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
File created	C:\Windows\ntdtcstp.dll	mstwain32.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exemstwain32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	mstwain32.exe

Modifies registry class 4 IoCs

Processes:

c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exemstwain32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lf1186604961l.ixw	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\lf1186604961l.ixw\ = dee356aadd803d5d9256fb5ad22c63bb	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lf1186604961l.ixw	mstwain32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\lf1186604961l.ixw\ = f6440b00000000005796375187f3e540	mstwain32.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exevssvc.exemstwain32.exe

description	pid	process
Token: SeDebugPrivilege	1996	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
Token: SeBackupPrivilege	564	vssvc.exe
Token: SeRestorePrivilege	564	vssvc.exe
Token: SeAuditPrivilege	564	vssvc.exe
Token: SeDebugPrivilege	1224	mstwain32.exe

Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exemstwain32.exemstwain32.exe

pid	process
1400	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
1400	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
1836	mstwain32.exe
1836	mstwain32.exe
1224	mstwain32.exe

Suspicious use of WriteProcessMemory 28 IoCs

Processes:

c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exec9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exemstwain32.exe

description	pid	process	target process
PID 1400 wrote to memory of 1996	1400	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
PID 1400 wrote to memory of 1996	1400	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
PID 1400 wrote to memory of 1996	1400	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
PID 1400 wrote to memory of 1996	1400	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
PID 1400 wrote to memory of 1996	1400	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
PID 1400 wrote to memory of 1996	1400	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
PID 1400 wrote to memory of 1996	1400	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
PID 1400 wrote to memory of 1996	1400	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
PID 1400 wrote to memory of 1996	1400	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
PID 1400 wrote to memory of 1996	1400	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
PID 1400 wrote to memory of 1996	1400	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
PID 1400 wrote to memory of 1996	1400	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
PID 1996 wrote to memory of 1836	1996	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe	mstwain32.exe
PID 1996 wrote to memory of 1836	1996	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe	mstwain32.exe
PID 1996 wrote to memory of 1836	1996	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe	mstwain32.exe
PID 1996 wrote to memory of 1836	1996	c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe	mstwain32.exe
PID 1836 wrote to memory of 1224	1836	mstwain32.exe	mstwain32.exe
PID 1836 wrote to memory of 1224	1836	mstwain32.exe	mstwain32.exe
PID 1836 wrote to memory of 1224	1836	mstwain32.exe	mstwain32.exe
PID 1836 wrote to memory of 1224	1836	mstwain32.exe	mstwain32.exe
PID 1836 wrote to memory of 1224	1836	mstwain32.exe	mstwain32.exe
PID 1836 wrote to memory of 1224	1836	mstwain32.exe	mstwain32.exe
PID 1836 wrote to memory of 1224	1836	mstwain32.exe	mstwain32.exe
PID 1836 wrote to memory of 1224	1836	mstwain32.exe	mstwain32.exe
PID 1836 wrote to memory of 1224	1836	mstwain32.exe	mstwain32.exe
PID 1836 wrote to memory of 1224	1836	mstwain32.exe	mstwain32.exe
PID 1836 wrote to memory of 1224	1836	mstwain32.exe	mstwain32.exe
PID 1836 wrote to memory of 1224	1836	mstwain32.exe	mstwain32.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

mstwain32.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" mstwain32.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	mstwain32.exe

C:\Users\Admin\AppData\Local\Temp\c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
"C:\Users\Admin\AppData\Local\Temp\c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe"
1⤵
- Checks BIOS information in registry
- Suspicious use of SetThreadContext
- Enumerates system info in registry
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1400
- C:\Users\Admin\AppData\Local\Temp\c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
  C:\Users\Admin\AppData\Local\Temp\c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be.exe
  2⤵
  - Checks whether UAC is enabled
  - Drops file in Windows directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1996
- - C:\Windows\mstwain32.exe
    "C:\Windows\mstwain32.exe"
    3⤵
    - Executes dropped EXE
    - Checks BIOS information in registry
    - Suspicious use of SetThreadContext
    - Enumerates system info in registry
    - Modifies registry class
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1836
  - - C:\Windows\mstwain32.exe
      C:\Windows\mstwain32.exe
      4⤵
      UAC bypass
      Executes dropped EXE
      Adds Run key to start application
      Checks whether UAC is enabled
      Drops file in Windows directory
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      System policy modification
      PID:1224

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:564

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Bypass User Account Control

1

T1088

Defense Evasion

Bypass User Account Control

1

T1088

Disabling Security Tools

Modify Registry

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

4

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-2292972927-2705560509-2768824231-1000\549b9b645cadfe6bb4bc69cf363c354c_4339b52c-c4ea-4bc4-b41f-93efca473d02

Filesize
2KB

MD5
f97f9e17eafdd0105a4e11bafde04b40

SHA1
ba06a7abe986a61b71889b80a6f9b02b22d40667

SHA256
4783424121e6c2f870dc931b374d20c62c764eddc5769d2f536609adc1226abb

SHA512
778c4aab55f6f0fe44dbc9a97f53b59ec8ed2e35901f77afebaea57c738ad301412760709ab909b51335ddd7676cd8f8c1410c5751f2ef5cc74282bcd6c5f50e

Download Submit
C:\Windows\mstwain32.exe

Filesize
982KB

MD5
8d4ca9867e0f2f59057a0a5ab23442de

SHA1
74aaa823e441bcd0e1075652bce2c234f702f8cf

SHA256
c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be

SHA512
40c0650470360868cac3624cabbfa7ed7ccbb0954e5f80866825aa87d9a61aca5c6af0d8d2db8617fe1f2265938beb7b6dbf268774de95d5dd0544f484cfe5ba

Download Submit
C:\Windows\mstwain32.exe

Filesize
982KB

MD5
8d4ca9867e0f2f59057a0a5ab23442de

SHA1
74aaa823e441bcd0e1075652bce2c234f702f8cf

SHA256
c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be

SHA512
40c0650470360868cac3624cabbfa7ed7ccbb0954e5f80866825aa87d9a61aca5c6af0d8d2db8617fe1f2265938beb7b6dbf268774de95d5dd0544f484cfe5ba

Download Submit
C:\Windows\mstwain32.exe

Filesize
982KB

MD5
8d4ca9867e0f2f59057a0a5ab23442de

SHA1
74aaa823e441bcd0e1075652bce2c234f702f8cf

SHA256
c9bfacf4a3cef8e1cc65b1b66d2b94fbf3a54cce4e3a65807df877a274ed75be

SHA512
40c0650470360868cac3624cabbfa7ed7ccbb0954e5f80866825aa87d9a61aca5c6af0d8d2db8617fe1f2265938beb7b6dbf268774de95d5dd0544f484cfe5ba

Download Submit
memory/1224-105-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1224-106-0x0000000000330000-0x0000000000340000-memory.dmp

Filesize
64KB

Download
memory/1224-104-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1224-107-0x0000000000460000-0x0000000000465000-memory.dmp

Filesize
20KB

Download
memory/1224-99-0x0000000000430464-mapping.dmp

Download
memory/1224-108-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1400-54-0x0000000075571000-0x0000000075573000-memory.dmp

Filesize
8KB

Download
memory/1400-73-0x0000000000400000-0x00000000004AB000-memory.dmp

Filesize
684KB

Download
memory/1400-55-0x0000000000400000-0x00000000004AB000-memory.dmp

Filesize
684KB

Download
memory/1836-102-0x0000000000400000-0x00000000004AB000-memory.dmp

Filesize
684KB

Download
memory/1836-81-0x0000000000400000-0x00000000004AB000-memory.dmp

Filesize
684KB

Download
memory/1836-77-0x0000000000000000-mapping.dmp

Download
memory/1996-66-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1996-79-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1996-76-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1996-75-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1996-72-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1996-70-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1996-71-0x0000000000430464-mapping.dmp

Download
memory/1996-68-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1996-65-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1996-63-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1996-61-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1996-59-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1996-58-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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