modiloader | 8b9a03d0d9c14c92a7dd502ba6f369e500f1862b791b5885a5ccfe0dc7c5b25a

General

Target

8b9a03d0d9c14c92a7dd502ba6f369e500f1862b791b5885a5ccfe0dc7c5b25a.exe
Size

120KB
MD5

af547638674ebf74a29ec73688845851
SHA1

d0e2aaf83e35b915dd49a4d2f0513eec8911f216
SHA256

8b9a03d0d9c14c92a7dd502ba6f369e500f1862b791b5885a5ccfe0dc7c5b25a
SHA512

89c0a1a42589e60854445c2f24212470cd0281471e9b7f5b22c0882caca8ea65847f58b47eac82f67369a7d6099e436b56ffd06ab848a1d3b1d4627cc2ba1064
SSDEEP

3072:Roy8j7VnNdrPHaSekwi+mWo6+NNmoutNeqD:h8jZ7rvaU3+mWozNNmoS9

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 3 IoCs

resource	yara_rule
behavioral1/memory/1364-58-0x0000000000400000-0x0000000000455000-memory.dmp	modiloader_stage2
behavioral1/memory/1628-61-0x0000000000400000-0x0000000000455000-memory.dmp	modiloader_stage2
behavioral1/memory/1628-62-0x0000000000400000-0x0000000000455000-memory.dmp	modiloader_stage2

Executes dropped EXE 1 IoCs

pid	Process
1628	mstwain32.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1364-55-0x0000000000400000-0x0000000000455000-memory.dmp	upx
behavioral1/files/0x0008000000014247-57.dat	upx
behavioral1/memory/1364-58-0x0000000000400000-0x0000000000455000-memory.dmp	upx
behavioral1/memory/1628-61-0x0000000000400000-0x0000000000455000-memory.dmp	upx
behavioral1/memory/1628-62-0x0000000000400000-0x0000000000455000-memory.dmp	upx

Deletes itself 1 IoCs

pid	Process
1628	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
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\mstwain32 = "C:\\Windows\\mstwain32.exe"	mstwain32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\	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	8b9a03d0d9c14c92a7dd502ba6f369e500f1862b791b5885a5ccfe0dc7c5b25a.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

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\mstwain32.exe	8b9a03d0d9c14c92a7dd502ba6f369e500f1862b791b5885a5ccfe0dc7c5b25a.exe
File created	C:\Windows\ntdtcstp.dll	mstwain32.exe
File created	C:\Windows\cmsetac.dll	mstwain32.exe
File created	C:\Windows\mstwain32.exe	8b9a03d0d9c14c92a7dd502ba6f369e500f1862b791b5885a5ccfe0dc7c5b25a.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 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1364	8b9a03d0d9c14c92a7dd502ba6f369e500f1862b791b5885a5ccfe0dc7c5b25a.exe
Token: SeDebugPrivilege	1628	mstwain32.exe
Token: SeDebugPrivilege	1628	mstwain32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1628	mstwain32.exe
1628	mstwain32.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1364 wrote to memory of 1628	1364	8b9a03d0d9c14c92a7dd502ba6f369e500f1862b791b5885a5ccfe0dc7c5b25a.exe	28
PID 1364 wrote to memory of 1628	1364	8b9a03d0d9c14c92a7dd502ba6f369e500f1862b791b5885a5ccfe0dc7c5b25a.exe	28
PID 1364 wrote to memory of 1628	1364	8b9a03d0d9c14c92a7dd502ba6f369e500f1862b791b5885a5ccfe0dc7c5b25a.exe	28
PID 1364 wrote to memory of 1628	1364	8b9a03d0d9c14c92a7dd502ba6f369e500f1862b791b5885a5ccfe0dc7c5b25a.exe	28

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\8b9a03d0d9c14c92a7dd502ba6f369e500f1862b791b5885a5ccfe0dc7c5b25a.exe
"C:\Users\Admin\AppData\Local\Temp\8b9a03d0d9c14c92a7dd502ba6f369e500f1862b791b5885a5ccfe0dc7c5b25a.exe"
1⤵
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1364
- C:\Windows\mstwain32.exe
  "C:\Windows\mstwain32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\8b9a03d0d9c14c92a7dd502ba6f369e500f1862b791b5885a5ccfe0dc7c5b25a.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:1628

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
120KB

MD5
af547638674ebf74a29ec73688845851

SHA1
d0e2aaf83e35b915dd49a4d2f0513eec8911f216

SHA256
8b9a03d0d9c14c92a7dd502ba6f369e500f1862b791b5885a5ccfe0dc7c5b25a

SHA512
89c0a1a42589e60854445c2f24212470cd0281471e9b7f5b22c0882caca8ea65847f58b47eac82f67369a7d6099e436b56ffd06ab848a1d3b1d4627cc2ba1064

Download Submit
memory/1364-54-0x0000000075701000-0x0000000075703000-memory.dmp

Filesize
8KB

Download
memory/1364-55-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/1364-58-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/1628-60-0x0000000002320000-0x000000000232E000-memory.dmp

Filesize
56KB

Download
memory/1628-61-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/1628-62-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads