vobfus | cc0b37e10c9e7d60272f354ff56878556afa0bb68e35fe93e2729f8e71bc1eae

General

Target

JaffaCakes118_1d4b6cc70c9b5fe6dc8430a9a7d9b57b.exe
Size

224KB
MD5

1d4b6cc70c9b5fe6dc8430a9a7d9b57b
SHA1

ed048729895bd52afbd2301735e962165f53c6e8
SHA256

cc0b37e10c9e7d60272f354ff56878556afa0bb68e35fe93e2729f8e71bc1eae
SHA512

985923408711a8ee93267ec825ca0f47b86bc59f50a0b4403b9ed241825afef6e4672d0815cc6bf6c8bf5e44420afdc18779e7abe8bf7080014829ed2bb557a6
SSDEEP

3072:vHjk+0oLnWFnzBHv/xWFsg8WatFBGFVWPE5ac0pG/1z+QVMbg1jm0+J:Po/BHng5HaVG4G/1z+QVMbg1jv+

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_1d4b6cc70c9b5fe6dc8430a9a7d9b57b.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_1d4b6cc70c9b5fe6dc8430a9a7d9b57b.exe
Key created	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_1d4b6cc70c9b5fe6dc8430a9a7d9b57b.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_1d4b6cc70c9b5fe6dc8430a9a7d9b57b.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\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_1d4b6cc70c9b5fe6dc8430a9a7d9b57b.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_1d4b6cc70c9b5fe6dc8430a9a7d9b57b.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2176-0-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/files/0x000c000000012280-7.dat	upx
behavioral1/memory/2176-10-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/memory/2176-67-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/memory/2176-281-0x0000000000400000-0x0000000000437000-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_1d4b6cc70c9b5fe6dc8430a9a7d9b57b.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
2176	JaffaCakes118_1d4b6cc70c9b5fe6dc8430a9a7d9b57b.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2176	JaffaCakes118_1d4b6cc70c9b5fe6dc8430a9a7d9b57b.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2176	JaffaCakes118_1d4b6cc70c9b5fe6dc8430a9a7d9b57b.exe
2176	JaffaCakes118_1d4b6cc70c9b5fe6dc8430a9a7d9b57b.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1d4b6cc70c9b5fe6dc8430a9a7d9b57b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1d4b6cc70c9b5fe6dc8430a9a7d9b57b.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:2176

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
224KB

MD5
6455bcea392ff0557bffba58a8caa6f6

SHA1
358df818d2cd3001592c80038c1648183e8fe524

SHA256
19e51054f0f843bf9526c1d17fe436ce6a4940fc2e737184f62e117f68866a57

SHA512
e563571f03c489051cd47ba438545f3bb307736866ae8de4bc9f64a5ef79d0b1899a0dd0a9d87d69f7812b4cdaab3e4dd54e551c992aa6e23cb212854c95d042

Download Submit
memory/2176-0-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2176-10-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2176-67-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2176-281-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads