modiloader | b16af33e07dd7c6a46c382cdee989a3c064fd54e727163e5c6fb7a006df42e98

General

Target

b16af33e07dd7c6a46c382cdee989a3c064fd54e727163e5c6fb7a006df42e98.exe
Size

110KB
MD5

6a50627bd18ae92a9a8833056cfd336b
SHA1

e91192d302efa2007762f6ca130d53e8f8443984
SHA256

b16af33e07dd7c6a46c382cdee989a3c064fd54e727163e5c6fb7a006df42e98
SHA512

d8b208561d5ee75f73fa196dfc7b5468e41a880101509058552cec6444693f8e8758bebe34fa6348c0dc54de483f5e55041a8020df15ed80386c4848d3094479
SSDEEP

1536:6VuNAXTj4Fj/91/NnLZqeWEPVpa8DzePjkgcwYS7S5+Vfk09GJsCwrcOwKnouy8y:ooy8j7VnNdrPHaSekwi+mWaeouty

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

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

ModiLoader Second Stage 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1448-56-0x0000000000400000-0x0000000000450000-memory.dmp	modiloader_stage2
behavioral1/memory/1448-60-0x0000000000400000-0x0000000000450000-memory.dmp	modiloader_stage2
behavioral1/memory/1524-61-0x0000000000400000-0x0000000000450000-memory.dmp	modiloader_stage2

Executes dropped EXE 1 IoCs

Processes:

mstwain32.exe

pid process

1524 mstwain32.exe

pid	process
1524	mstwain32.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1448-55-0x0000000000400000-0x0000000000450000-memory.dmp	upx
behavioral1/memory/1448-56-0x0000000000400000-0x0000000000450000-memory.dmp	upx
C:\Windows\mstwain32.exe	upx
behavioral1/memory/1448-60-0x0000000000400000-0x0000000000450000-memory.dmp	upx
behavioral1/memory/1524-61-0x0000000000400000-0x0000000000450000-memory.dmp	upx

Deletes itself 1 IoCs

Processes:

mstwain32.exe

pid process

1524 mstwain32.exe

pid	process
1524	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-1-5-21-3406023954-474543476-3319432036-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\	mstwain32.exe
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

Checks whether UAC is enabled 1 TTPs 3 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

b16af33e07dd7c6a46c382cdee989a3c064fd54e727163e5c6fb7a006df42e98.exemstwain32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	b16af33e07dd7c6a46c382cdee989a3c064fd54e727163e5c6fb7a006df42e98.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:

b16af33e07dd7c6a46c382cdee989a3c064fd54e727163e5c6fb7a006df42e98.exemstwain32.exe

description	ioc	process
File created	C:\Windows\mstwain32.exe	b16af33e07dd7c6a46c382cdee989a3c064fd54e727163e5c6fb7a006df42e98.exe
File opened for modification	C:\Windows\mstwain32.exe	b16af33e07dd7c6a46c382cdee989a3c064fd54e727163e5c6fb7a006df42e98.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:

b16af33e07dd7c6a46c382cdee989a3c064fd54e727163e5c6fb7a006df42e98.exevssvc.exemstwain32.exe

description	pid	process
Token: SeDebugPrivilege	1448	b16af33e07dd7c6a46c382cdee989a3c064fd54e727163e5c6fb7a006df42e98.exe
Token: SeBackupPrivilege	1192	vssvc.exe
Token: SeRestorePrivilege	1192	vssvc.exe
Token: SeAuditPrivilege	1192	vssvc.exe
Token: SeDebugPrivilege	1524	mstwain32.exe
Token: SeDebugPrivilege	1524	mstwain32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

mstwain32.exe

pid process

1524 mstwain32.exe
1524 mstwain32.exe

pid	process
1524	mstwain32.exe
1524	mstwain32.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

b16af33e07dd7c6a46c382cdee989a3c064fd54e727163e5c6fb7a006df42e98.exe

description	pid	process	target process
PID 1448 wrote to memory of 1524	1448	b16af33e07dd7c6a46c382cdee989a3c064fd54e727163e5c6fb7a006df42e98.exe	mstwain32.exe
PID 1448 wrote to memory of 1524	1448	b16af33e07dd7c6a46c382cdee989a3c064fd54e727163e5c6fb7a006df42e98.exe	mstwain32.exe
PID 1448 wrote to memory of 1524	1448	b16af33e07dd7c6a46c382cdee989a3c064fd54e727163e5c6fb7a006df42e98.exe	mstwain32.exe
PID 1448 wrote to memory of 1524	1448	b16af33e07dd7c6a46c382cdee989a3c064fd54e727163e5c6fb7a006df42e98.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\b16af33e07dd7c6a46c382cdee989a3c064fd54e727163e5c6fb7a006df42e98.exe
"C:\Users\Admin\AppData\Local\Temp\b16af33e07dd7c6a46c382cdee989a3c064fd54e727163e5c6fb7a006df42e98.exe"
1⤵
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1448

C:\Windows\mstwain32.exe
"C:\Windows\mstwain32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\b16af33e07dd7c6a46c382cdee989a3c064fd54e727163e5c6fb7a006df42e98.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:1524

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1192

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
6a50627bd18ae92a9a8833056cfd336b

SHA1
e91192d302efa2007762f6ca130d53e8f8443984

SHA256
b16af33e07dd7c6a46c382cdee989a3c064fd54e727163e5c6fb7a006df42e98

SHA512
d8b208561d5ee75f73fa196dfc7b5468e41a880101509058552cec6444693f8e8758bebe34fa6348c0dc54de483f5e55041a8020df15ed80386c4848d3094479

Download Submit
memory/1448-54-0x0000000075BA1000-0x0000000075BA3000-memory.dmp

Filesize
8KB

Download
memory/1448-55-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1448-56-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1448-60-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1524-57-0x0000000000000000-mapping.dmp

Download
memory/1524-61-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1524-62-0x00000000004D0000-0x00000000004DE000-memory.dmp

Filesize
56KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads