a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c

General

Target

a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe
Size

157KB
MD5

487263c4702fddf2e934011660e5b0d2
SHA1

f973eb2f23c3ce67a336f0fc103d0c0ad66fae7d
SHA256

a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c
SHA512

8aa9d2891eae011fef1a7749a8656eeaafbcd40f265fb6abe0c1b88076158713cac3b9db6e677798755462c03867581eaa738d1f5a68141e9a591789c88b4448
SSDEEP

3072:edRl46hFj7DossLd6NJEC2JBbJV8L3ngSrZKKea/DMVIlRU:et46hFLohLdeEVtggSk04VIM

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\software\WOW6432Node\Microsoft\Windows\CurrentVersion\run	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe

Enumerates connected drives 3 TTPs 22 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\H:	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe
File opened (read-only)	\??\E:	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe
File opened (read-only)	\??\O:	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe
File opened (read-only)	\??\K:	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe
File opened (read-only)	\??\J:	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe
File opened (read-only)	\??\I:	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe
File opened (read-only)	\??\U:	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe
File opened (read-only)	\??\R:	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe
File opened (read-only)	\??\P:	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe
File opened (read-only)	\??\N:	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe
File opened (read-only)	\??\L:	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe
File opened (read-only)	\??\F:	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe
File opened (read-only)	\??\Y:	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe
File opened (read-only)	\??\X:	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe
File opened (read-only)	\??\T:	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe
File opened (read-only)	\??\S:	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe
File opened (read-only)	\??\M:	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe
File opened (read-only)	\??\G:	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe
File opened (read-only)	\??\Z:	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe
File opened (read-only)	\??\W:	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe
File opened (read-only)	\??\V:	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe
File opened (read-only)	\??\Q:	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe

Drops autorun.inf file 1 TTPs 2 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

description	ioc	Process
File opened for modification	C:\Documents and Settings\Admin\Local Settings\Application Data\Microsoft\CD Burning\autorun.inf	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe
File opened for modification	C:\autorun.inf	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1728	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe
1728	a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe

C:\Users\Admin\AppData\Local\Temp\a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe
"C:\Users\Admin\AppData\Local\Temp\a3f09cf8b8657ebd08d25ac68f45dcea143804aeb98b53cfa80b4fb4da6b071c.exe"
1⤵
- Modifies visibility of file extensions in Explorer
- Adds Run key to start application
- Enumerates connected drives
- Drops autorun.inf file
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
PID:1728

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:3776

Network

MITRE ATT&CK Enterprise v6

Initial Access

Replication Through Removable Media

1

T1091

Execution

Persistence

Hidden Files and Directories

1

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Replication Through Removable Media

1

T1091

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1728-132-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/1728-133-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads