b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0

General

Target

b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe
Size

151KB
MD5

4bb0425e85e1ee2a69b9f92ec1b48dca
SHA1

f1ca7e3203d54b789a2016b27d85fb7de188891b
SHA256

b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0
SHA512

005f2542fee5dc6d9a10a0405f28b408cbce5670ade26c4fa7a321ee85e3cef5adbaac6e3fca8b2c6fe540ad336c821844afe872af9287c455647d857688f2a0
SSDEEP

1536:miDqunGEn04ey5rwzagOOj6v0hgZx3PySeZtaF8p3DITaslM96rnWH6JnjvSLOvD:dt04rwzx42WtO6M96rcLORlXMwn+4IJe

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-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.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	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.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:	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe
File opened (read-only)	\??\Y:	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe
File opened (read-only)	\??\U:	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe
File opened (read-only)	\??\T:	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe
File opened (read-only)	\??\Q:	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe
File opened (read-only)	\??\P:	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe
File opened (read-only)	\??\N:	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe
File opened (read-only)	\??\J:	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe
File opened (read-only)	\??\F:	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe
File opened (read-only)	\??\S:	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe
File opened (read-only)	\??\R:	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe
File opened (read-only)	\??\M:	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe
File opened (read-only)	\??\Z:	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe
File opened (read-only)	\??\X:	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe
File opened (read-only)	\??\W:	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe
File opened (read-only)	\??\V:	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe
File opened (read-only)	\??\L:	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe
File opened (read-only)	\??\I:	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe
File opened (read-only)	\??\E:	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe
File opened (read-only)	\??\O:	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe
File opened (read-only)	\??\K:	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe
File opened (read-only)	\??\G:	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.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:\autorun.inf	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe
File opened for modification	C:\Documents and Settings\Admin\Local Settings\Application Data\Microsoft\CD Burning\autorun.inf	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\PROGRAM FILES (X86)\ADOBE\ACROBAT READER DC\READER\ACRORD32.EXE	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4620	4868	WerFault.exe	81

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4868	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe
4868	b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe

C:\Users\Admin\AppData\Local\Temp\b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe
"C:\Users\Admin\AppData\Local\Temp\b66e26af6cedde04e895902ed161c60453071811e44b5e92e55a3d318af883a0.exe"
1⤵
- Modifies visibility of file extensions in Explorer
- Adds Run key to start application
- Enumerates connected drives
- Drops autorun.inf file
- Drops file in Program Files directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
PID:4868
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4868 -s 1312
  2⤵
  - Program crash
  PID:4620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 4868 -ip 4868
1⤵
PID:4920

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:2316

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/4868-132-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/4868-133-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads