modiloader | a92898127820bd08fee66d928519ed552e33c6c5cd6f9f3e9206cadbd5667167

General

Target

a92898127820bd08fee66d928519ed552e33c6c5cd6f9f3e9206cadbd5667167.exe
Size

108KB
MD5

0bb625f8e2360406691d95e937c1f4ef
SHA1

5a4c3c86a56ec3a2ed112c8f1019d2e3340db8ec
SHA256

a92898127820bd08fee66d928519ed552e33c6c5cd6f9f3e9206cadbd5667167
SHA512

128dbb0dc1585eccd5b1e8799d937e212e888eb7063ee591a7f80c14bf4f03eee13620974c51010d9142ddb5835334e01d6394c874f39d0a7c524583f117635e
SSDEEP

3072:Z1+MJKrUnFYY5z1i0Nmbi5fJBNhLxKqKmu8out:PIrPj0NmWtNhxvKeoS

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

Processes:

mstwain32.exe

description ioc process

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

ModiLoader Second Stage 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/564-56-0x0000000000400000-0x0000000000450000-memory.dmp	modiloader_stage2
behavioral1/memory/564-60-0x0000000000400000-0x0000000000450000-memory.dmp	modiloader_stage2
behavioral1/memory/1712-63-0x0000000000400000-0x0000000000450000-memory.dmp	modiloader_stage2
behavioral1/memory/1712-64-0x0000000000400000-0x0000000000450000-memory.dmp	modiloader_stage2

Executes dropped EXE 1 IoCs

Processes:

mstwain32.exe

pid process

1712 mstwain32.exe

pid	process
1712	mstwain32.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/564-55-0x0000000000400000-0x0000000000450000-memory.dmp	upx
behavioral1/memory/564-56-0x0000000000400000-0x0000000000450000-memory.dmp	upx
behavioral1/memory/564-60-0x0000000000400000-0x0000000000450000-memory.dmp	upx
C:\Windows\mstwain32.exe	upx
behavioral1/memory/1712-63-0x0000000000400000-0x0000000000450000-memory.dmp	upx
behavioral1/memory/1712-64-0x0000000000400000-0x0000000000450000-memory.dmp	upx

Deletes itself 1 IoCs

Processes:

mstwain32.exe

pid process

1712 mstwain32.exe

pid	process
1712	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-1-5-21-2292972927-2705560509-2768824231-1000\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:

mstwain32.exea92898127820bd08fee66d928519ed552e33c6c5cd6f9f3e9206cadbd5667167.exe

description	ioc	process
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	a92898127820bd08fee66d928519ed552e33c6c5cd6f9f3e9206cadbd5667167.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	mstwain32.exe

Drops file in Windows directory 4 IoCs

Processes:

a92898127820bd08fee66d928519ed552e33c6c5cd6f9f3e9206cadbd5667167.exemstwain32.exe

description	ioc	process
File created	C:\Windows\mstwain32.exe	a92898127820bd08fee66d928519ed552e33c6c5cd6f9f3e9206cadbd5667167.exe
File opened for modification	C:\Windows\mstwain32.exe	a92898127820bd08fee66d928519ed552e33c6c5cd6f9f3e9206cadbd5667167.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:

a92898127820bd08fee66d928519ed552e33c6c5cd6f9f3e9206cadbd5667167.exevssvc.exemstwain32.exe

description	pid	process
Token: SeDebugPrivilege	564	a92898127820bd08fee66d928519ed552e33c6c5cd6f9f3e9206cadbd5667167.exe
Token: SeBackupPrivilege	1164	vssvc.exe
Token: SeRestorePrivilege	1164	vssvc.exe
Token: SeAuditPrivilege	1164	vssvc.exe
Token: SeDebugPrivilege	1712	mstwain32.exe
Token: SeDebugPrivilege	1712	mstwain32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

a92898127820bd08fee66d928519ed552e33c6c5cd6f9f3e9206cadbd5667167.exe

pid process

564 a92898127820bd08fee66d928519ed552e33c6c5cd6f9f3e9206cadbd5667167.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

mstwain32.exe

pid process

1712 mstwain32.exe
1712 mstwain32.exe

pid	process
564	a92898127820bd08fee66d928519ed552e33c6c5cd6f9f3e9206cadbd5667167.exe

pid	process
1712	mstwain32.exe
1712	mstwain32.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

a92898127820bd08fee66d928519ed552e33c6c5cd6f9f3e9206cadbd5667167.exe

description	pid	process	target process
PID 564 wrote to memory of 1712	564	a92898127820bd08fee66d928519ed552e33c6c5cd6f9f3e9206cadbd5667167.exe	mstwain32.exe
PID 564 wrote to memory of 1712	564	a92898127820bd08fee66d928519ed552e33c6c5cd6f9f3e9206cadbd5667167.exe	mstwain32.exe
PID 564 wrote to memory of 1712	564	a92898127820bd08fee66d928519ed552e33c6c5cd6f9f3e9206cadbd5667167.exe	mstwain32.exe
PID 564 wrote to memory of 1712	564	a92898127820bd08fee66d928519ed552e33c6c5cd6f9f3e9206cadbd5667167.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

C:\Users\Admin\AppData\Local\Temp\a92898127820bd08fee66d928519ed552e33c6c5cd6f9f3e9206cadbd5667167.exe
"C:\Users\Admin\AppData\Local\Temp\a92898127820bd08fee66d928519ed552e33c6c5cd6f9f3e9206cadbd5667167.exe"
1⤵
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:564

C:\Windows\mstwain32.exe
"C:\Windows\mstwain32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\a92898127820bd08fee66d928519ed552e33c6c5cd6f9f3e9206cadbd5667167.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:1712

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1164

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
108KB

MD5
0bb625f8e2360406691d95e937c1f4ef

SHA1
5a4c3c86a56ec3a2ed112c8f1019d2e3340db8ec

SHA256
a92898127820bd08fee66d928519ed552e33c6c5cd6f9f3e9206cadbd5667167

SHA512
128dbb0dc1585eccd5b1e8799d937e212e888eb7063ee591a7f80c14bf4f03eee13620974c51010d9142ddb5835334e01d6394c874f39d0a7c524583f117635e

Download Submit
memory/564-54-0x0000000074AD1000-0x0000000074AD3000-memory.dmp

Filesize
8KB

Download
memory/564-55-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/564-56-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/564-57-0x0000000073FF1000-0x0000000073FF3000-memory.dmp

Filesize
8KB

Download
memory/564-60-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1712-58-0x0000000000000000-mapping.dmp

Download
memory/1712-62-0x00000000003F0000-0x00000000003FE000-memory.dmp

Filesize
56KB

Download
memory/1712-63-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1712-64-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads