modiloader | ca9ac1c240fd0dc57a9cc920a775f26683b134a06c0299be9b89ad5a594f8e6b

General

Target

ca9ac1c240fd0dc57a9cc920a775f26683b134a06c0299be9b89ad5a594f8e6b.exe
Size

110KB
MD5

83d3e8e4e013212136e0e0cfbaf5602e
SHA1

42edf32730b6478d94b7c68b564dbadf6401712f
SHA256

ca9ac1c240fd0dc57a9cc920a775f26683b134a06c0299be9b89ad5a594f8e6b
SHA512

04c302bd0d8a5b77f6d02d0d20a1016959bb7dba2cb01480b89cc1e7e6d8be951d471af2474d9fec8edd13ae0f558eb89dbc80ed032a34a68687a53430d3034d
SSDEEP

3072:Boy8j7VnNdrPHaSekwi+mW+2CDc4SFPJLout:R8jZ7rvaU3+mWrroS

Score

10^/10

modiloader evasion persistence trojan upx

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

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

ModiLoader Second Stage 4 IoCs

resource	yara_rule
behavioral1/memory/1676-55-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral1/memory/1676-59-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral1/memory/1052-61-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral1/memory/1052-62-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2

Executes dropped EXE 1 IoCs

pid	Process
1052	mstwain32.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1676-55-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral1/files/0x000c0000000054a8-57.dat	upx
behavioral1/memory/1676-59-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral1/memory/1052-61-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral1/memory/1052-62-0x0000000000400000-0x000000000044F000-memory.dmp	upx

Deletes itself 1 IoCs

pid	Process
1052	mstwain32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\	mstwain32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\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

description	ioc	Process
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
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	ca9ac1c240fd0dc57a9cc920a775f26683b134a06c0299be9b89ad5a594f8e6b.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\mstwain32.exe	ca9ac1c240fd0dc57a9cc920a775f26683b134a06c0299be9b89ad5a594f8e6b.exe
File opened for modification	C:\Windows\mstwain32.exe	ca9ac1c240fd0dc57a9cc920a775f26683b134a06c0299be9b89ad5a594f8e6b.exe
File created	C:\Windows\ntdtcstp.dll	mstwain32.exe
File created	C:\Windows\cmsetac.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

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1676	ca9ac1c240fd0dc57a9cc920a775f26683b134a06c0299be9b89ad5a594f8e6b.exe
Token: SeBackupPrivilege	2004	vssvc.exe
Token: SeRestorePrivilege	2004	vssvc.exe
Token: SeAuditPrivilege	2004	vssvc.exe
Token: SeDebugPrivilege	1052	mstwain32.exe
Token: SeDebugPrivilege	1052	mstwain32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1052	mstwain32.exe
1052	mstwain32.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1676 wrote to memory of 1052	1676	ca9ac1c240fd0dc57a9cc920a775f26683b134a06c0299be9b89ad5a594f8e6b.exe	31
PID 1676 wrote to memory of 1052	1676	ca9ac1c240fd0dc57a9cc920a775f26683b134a06c0299be9b89ad5a594f8e6b.exe	31
PID 1676 wrote to memory of 1052	1676	ca9ac1c240fd0dc57a9cc920a775f26683b134a06c0299be9b89ad5a594f8e6b.exe	31
PID 1676 wrote to memory of 1052	1676	ca9ac1c240fd0dc57a9cc920a775f26683b134a06c0299be9b89ad5a594f8e6b.exe	31

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

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

C:\Users\Admin\AppData\Local\Temp\ca9ac1c240fd0dc57a9cc920a775f26683b134a06c0299be9b89ad5a594f8e6b.exe
"C:\Users\Admin\AppData\Local\Temp\ca9ac1c240fd0dc57a9cc920a775f26683b134a06c0299be9b89ad5a594f8e6b.exe"
1⤵
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1676
- C:\Windows\mstwain32.exe
  "C:\Windows\mstwain32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\ca9ac1c240fd0dc57a9cc920a775f26683b134a06c0299be9b89ad5a594f8e6b.exe"
  2⤵
  - UAC bypass
  - Executes dropped EXE
  - Deletes itself
  - 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:1052

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2004

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

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\mstwain32.exe

Filesize
110KB

MD5
83d3e8e4e013212136e0e0cfbaf5602e

SHA1
42edf32730b6478d94b7c68b564dbadf6401712f

SHA256
ca9ac1c240fd0dc57a9cc920a775f26683b134a06c0299be9b89ad5a594f8e6b

SHA512
04c302bd0d8a5b77f6d02d0d20a1016959bb7dba2cb01480b89cc1e7e6d8be951d471af2474d9fec8edd13ae0f558eb89dbc80ed032a34a68687a53430d3034d

Download Submit
memory/1052-60-0x0000000001DA0000-0x0000000001DAE000-memory.dmp

Filesize
56KB

Download
memory/1052-61-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/1052-62-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/1676-54-0x0000000075E31000-0x0000000075E33000-memory.dmp

Filesize
8KB

Download
memory/1676-55-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/1676-59-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads