vobfus | 12df5f115fa6663fd4408d4064499eb7a3f3610b6ce76809484183c49241e1e4

General

Target

JaffaCakes118_e5b8188379f0b45c15b9d0bf084181f6.exe
Size

224KB
MD5

e5b8188379f0b45c15b9d0bf084181f6
SHA1

91518827a2d9a1ff1a1a12a619a43c5206344576
SHA256

12df5f115fa6663fd4408d4064499eb7a3f3610b6ce76809484183c49241e1e4
SHA512

c3feb253378a36a238efa220bc77c8a215404f3066d598a9343bc356a0207ad2c4413565c3fbe258324a870bfb809bee2ffde8d5cf38daaa18257030040ba5be
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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_e5b8188379f0b45c15b9d0bf084181f6.exe
Key created	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_e5b8188379f0b45c15b9d0bf084181f6.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_e5b8188379f0b45c15b9d0bf084181f6.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	JaffaCakes118_e5b8188379f0b45c15b9d0bf084181f6.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_e5b8188379f0b45c15b9d0bf084181f6.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_e5b8188379f0b45c15b9d0bf084181f6.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2072-0-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/files/0x000f000000012782-7.dat	upx
behavioral1/memory/2072-10-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/memory/2072-67-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/memory/2072-281-0x0000000000400000-0x0000000000437000-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_e5b8188379f0b45c15b9d0bf084181f6.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
2072	JaffaCakes118_e5b8188379f0b45c15b9d0bf084181f6.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2072	JaffaCakes118_e5b8188379f0b45c15b9d0bf084181f6.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2072	JaffaCakes118_e5b8188379f0b45c15b9d0bf084181f6.exe
2072	JaffaCakes118_e5b8188379f0b45c15b9d0bf084181f6.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e5b8188379f0b45c15b9d0bf084181f6.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e5b8188379f0b45c15b9d0bf084181f6.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:2072

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
224KB

MD5
234cead0d5caa2bcd44e66458295f28b

SHA1
b48260a6dbfa482e5c03377e9564f2e1374a80d5

SHA256
668859c3377441b6baf3d54fa4a4fb4aa4a4b17f0b012633c47908c4d908aef9

SHA512
6b8c7cb7ab5e7023c5c696c7db462315a9d11bc87f0dba05a0474c072ce143de94aa25689319b1142cdfcca60052480461f859d1319158319520bd115d41258e

Download Submit
memory/2072-0-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2072-10-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2072-67-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2072-281-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads