vobfus | 7f620521abc1eab35ac1e9b42063fda2cae7e7e49dd7984c9fb7b33eacf16a59

General

Target

JaffaCakes118_51ecefa14a05190c415691079794b129.exe
Size

13.7MB
MD5

51ecefa14a05190c415691079794b129
SHA1

7a9504c607c4bb949cfdad4e08ef2800fd25d6b3
SHA256

7f620521abc1eab35ac1e9b42063fda2cae7e7e49dd7984c9fb7b33eacf16a59
SHA512

e7e3a7e31d0f0194623eb803a2edfec6cba2fd4448d5ac882194fbfd279bd647973cdf4ad8be986b25b7025bc854814a3759145a3af3e98b6d6add4ad1bc023e
SSDEEP

98304:Vbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbir:G

Score

10^/10

vobfus discovery persistence upx worm

Malware Config

Signatures

Vobfus
A widespread worm which spreads via network drives and removable media.
worm vobfus
Vobfus family
vobfus

Adds policy Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	JaffaCakes118_51ecefa14a05190c415691079794b129.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_51ecefa14a05190c415691079794b129.exe
Key created	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_51ecefa14a05190c415691079794b129.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_51ecefa14a05190c415691079794b129.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_51ecefa14a05190c415691079794b129.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_51ecefa14a05190c415691079794b129.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2628-0-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/files/0x0007000000012118-7.dat	upx
behavioral1/memory/2628-17-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/memory/2628-18-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/memory/2628-232-0x0000000000400000-0x0000000000437000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_51ecefa14a05190c415691079794b129.exe

Script User-Agent 2 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	3	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	4	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2628	JaffaCakes118_51ecefa14a05190c415691079794b129.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2628	JaffaCakes118_51ecefa14a05190c415691079794b129.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2628	JaffaCakes118_51ecefa14a05190c415691079794b129.exe
2628	JaffaCakes118_51ecefa14a05190c415691079794b129.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_51ecefa14a05190c415691079794b129.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_51ecefa14a05190c415691079794b129.exe"
1⤵
- Adds policy Run key to start application
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
PID:2628

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\AG58FPQON.exe

Filesize
13.7MB

MD5
a331fe54b1e52b40af6aa00ccf948292

SHA1
56f739520e190bd86e95e66305c90eff7317d209

SHA256
55d4f7c925d1bfbc787423185ddd796bedf4098f3b58b61a6b9a03af3ef61500

SHA512
af96fdbdb538f2ebd90d073acb6702839d5ba12491e06faee293083923def64eeb9553a08745e4ceb8ae671e15568f032337f13fa5c7fbf680f4007dcabeaa23

Download Submit
memory/2628-0-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2628-17-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2628-18-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2628-232-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads