7ed20d7a8f61ce7efb5354bdf8e02b6f3cefa418f8adb9e6d81f70086102e5e8

Resubmissions

28-08-2022 23:26

220828-3e8ymagabq 5

10-06-2021 11:42

210610-j9y37a6cma 5

10-06-2021 11:31

210610-k9s461t52a 5

Analysis

max time kernel
145s
max time network
152s
platform
windows7_x64
resource
win7v20210408
submitted
10-06-2021 11:31

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General

Target

sample.exe
Size

2.3MB
MD5

84ffb87cc91d697db2f5685df68de7af
SHA1

4f0360d60b685ed6059d32aef24c6b3cbbd46e9e
SHA256

10bba07a1965c61a2ec05b46331e3eeda3d7bdeb8074c86009dc11f2564048fa
SHA512

c6b178f37b2318b4eeaf1e151cac70a10b0be8eeb0e8153bd324a66314a33dca27e43254518a4b2db2ed5cab31ff836e0fa84e2a8112b67772409d77f39d5e9f

Score

5^/10

ransomware

Malware Config

Signatures

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

Processes:

sample.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Desktop\\Notify.jpg"	sample.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies Control Panel 2 IoCs

evasion

Processes:

sample.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\WallpaperStyle = "6"	sample.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\TileWallpaper = "0"	sample.exe

Modifies registry class 12 IoCs

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\bam!_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\bam!_auto_file\shell\edit\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\bam!_auto_file\shell\edit\command\ = "%SystemRoot%\\system32\\NOTEPAD.EXE %1"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\bam!_auto_file\shell\open	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\bam!_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\bam!_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\.bam!\ = "bam!_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\bam!_auto_file\shell\edit	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\bam!_auto_file\shell\open\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\bam!_auto_file\shell\open\command\ = "%SystemRoot%\\system32\\NOTEPAD.EXE %1"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\.bam!	rundll32.exe

Opens file in notepad (likely ransom note) 1 IoCs
ransomware

Processes:

NOTEPAD.EXE

pid process

524 NOTEPAD.EXE

pid	process
524	NOTEPAD.EXE

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

AUDIODG.EXE

description	pid	process
Token: 33	1000	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1000	AUDIODG.EXE
Token: 33	1000	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1000	AUDIODG.EXE

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 1792 wrote to memory of 524	1792	rundll32.exe	NOTEPAD.EXE
PID 1792 wrote to memory of 524	1792	rundll32.exe	NOTEPAD.EXE
PID 1792 wrote to memory of 524	1792	rundll32.exe	NOTEPAD.EXE

C:\Users\Admin\AppData\Local\Temp\sample.exe
"C:\Users\Admin\AppData\Local\Temp\sample.exe"
1⤵
- Sets desktop wallpaper using registry
- Modifies Control Panel
PID:736

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\Documents\AssertEnable.vsdx.bam!
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1792

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Documents\AssertEnable.vsdx.bam!
2⤵
- Opens file in notepad (likely ransom note)
PID:524

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x4f8
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1000

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Defacement

T1491

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Downloads

C:\Users\Admin\Documents\AssertEnable.vsdx.bam!
MD5
d65ba7e9847369b709cbbd74d6a09aaf

SHA1
72922d0ab9dba5a5bd1cd8c1dfdf3ab62112755d

SHA256
1e323d09edf69d246103061ff0f14dfed226cb902b14611b1c06bfec3beab4ca

SHA512
da20ecba20b4369ad491e599e146ecfe54e0831f4ebecd014b0f3be642c67f02bfaa9dd86094cc721301a49deb37dad0969c5821c5de4f81a7fc9a704637fb40

Download Submit
memory/524-62-0x0000000000000000-mapping.dmp

Download
memory/736-60-0x0000000075891000-0x0000000075893000-memory.dmp

Filesize
8KB

Download
memory/1792-61-0x000007FEFBEA1000-0x000007FEFBEA3000-memory.dmp

Filesize
8KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads