vobfus | 8ebbd2760508e5e72b2933510cf415438adc44d2ffc86e7ca3731921e3e52e0a

General

Target

JaffaCakes118_2563ade594e1a7ea13fd786c6c3c8824.exe
Size

224KB
MD5

2563ade594e1a7ea13fd786c6c3c8824
SHA1

4d5844b14c486ecfa819d3edb270782bbea72432
SHA256

8ebbd2760508e5e72b2933510cf415438adc44d2ffc86e7ca3731921e3e52e0a
SHA512

75056dbbdf851700a2efa2cfff2f5d5182e5e96627af54432aaa5b78e193e249c6b33e798bd175a54748b6b6c0b7679c8033164a7b16f3ef935e2fb5f594c239
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\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_2563ade594e1a7ea13fd786c6c3c8824.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_2563ade594e1a7ea13fd786c6c3c8824.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	JaffaCakes118_2563ade594e1a7ea13fd786c6c3c8824.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_2563ade594e1a7ea13fd786c6c3c8824.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_2563ade594e1a7ea13fd786c6c3c8824.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_2563ade594e1a7ea13fd786c6c3c8824.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3048-0-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/files/0x0007000000012117-7.dat	upx
behavioral1/memory/3048-17-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/memory/3048-18-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/memory/3048-232-0x0000000000400000-0x0000000000437000-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_2563ade594e1a7ea13fd786c6c3c8824.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
3048	JaffaCakes118_2563ade594e1a7ea13fd786c6c3c8824.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
3048	JaffaCakes118_2563ade594e1a7ea13fd786c6c3c8824.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3048	JaffaCakes118_2563ade594e1a7ea13fd786c6c3c8824.exe
3048	JaffaCakes118_2563ade594e1a7ea13fd786c6c3c8824.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2563ade594e1a7ea13fd786c6c3c8824.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2563ade594e1a7ea13fd786c6c3c8824.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:3048

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
1beab3eb57a5ae87b854eebe64ce199c

SHA1
1e511d9a546d70f658b87e7d0c8e15d2cb2adc3d

SHA256
9af24988b95e278df90e5f42e38478bf9b1f317432107d073c819d7933a0c9f9

SHA512
09a577531a29189c24d1fe154de2a0c023c96fe2d1405f241a70825dbf87b42ebd888cbb851465c529af0888fc55ce2ac82d9dc05922ffaaecea5caa7c3106cf

Download Submit
memory/3048-0-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/3048-17-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/3048-18-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/3048-232-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads