modiloader | 435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38

General

Target

435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.exe
Size

270KB
MD5

456777f9842bbf7349c8a8a8c3cf3ef3
SHA1

4b3167b0d94ca6a06491b415ced1de0d003afe1d
SHA256

435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38
SHA512

1011ca3db226ee755d0b10c8116bc4de0fd1b37a55864b177b774b9948a3ea2a6fa553aad41b10742c3b8bb307becad3fb78cb7dc64f6efb81bf4f9cd6e0e557
SSDEEP

6144:hG377xS2Vp2CeiorXdwTBgWx4v53RpcCJJvH9:0r7xS2Vp6RwTyCgbJJvH9

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 1 IoCs

Processes:

resource	yara_rule
C:\Windows\mstwain32.exe	modiloader_stage2

Executes dropped EXE 1 IoCs

Processes:

mstwain32.exe

pid process

1532 mstwain32.exe
Deletes itself 1 IoCs

Processes:

mstwain32.exe

pid process

1532 mstwain32.exe

pid	process
1532	mstwain32.exe

pid	process
1532	mstwain32.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-1-5-21-1214520366-621468234-4062160515-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\	mstwain32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\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:

435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.exemstwain32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.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

Processes:

435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.exemstwain32.exe

description	ioc	process
File created	C:\Windows\mstwain32.exe	435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.exe
File opened for modification	C:\Windows\mstwain32.exe	435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.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

Processes:

435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.exevssvc.exemstwain32.exe

description	pid	process
Token: SeDebugPrivilege	716	435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.exe
Token: SeBackupPrivilege	1204	vssvc.exe
Token: SeRestorePrivilege	1204	vssvc.exe
Token: SeAuditPrivilege	1204	vssvc.exe
Token: SeDebugPrivilege	1532	mstwain32.exe
Token: SeDebugPrivilege	1532	mstwain32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

mstwain32.exe

pid process

1532 mstwain32.exe
1532 mstwain32.exe

pid	process
1532	mstwain32.exe
1532	mstwain32.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.exe

description	pid	process	target process
PID 716 wrote to memory of 1532	716	435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.exe	mstwain32.exe
PID 716 wrote to memory of 1532	716	435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.exe	mstwain32.exe
PID 716 wrote to memory of 1532	716	435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.exe	mstwain32.exe
PID 716 wrote to memory of 1532	716	435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.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\435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.exe
"C:\Users\Admin\AppData\Local\Temp\435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.exe"
1⤵
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:716

C:\Windows\mstwain32.exe
"C:\Windows\mstwain32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.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:1532

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1204

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
270KB

MD5
456777f9842bbf7349c8a8a8c3cf3ef3

SHA1
4b3167b0d94ca6a06491b415ced1de0d003afe1d

SHA256
435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38

SHA512
1011ca3db226ee755d0b10c8116bc4de0fd1b37a55864b177b774b9948a3ea2a6fa553aad41b10742c3b8bb307becad3fb78cb7dc64f6efb81bf4f9cd6e0e557

Download Submit
memory/716-54-0x0000000074E61000-0x0000000074E63000-memory.dmp

Filesize
8KB

Download
memory/1532-55-0x0000000000000000-mapping.dmp

Download
memory/1532-58-0x00000000005E0000-0x00000000005EE000-memory.dmp

Filesize
56KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads