vobfus | 0733a9ae261b084118efbb9abe34294a66111421a421f7f163facaefc7b388c8

General

Target

JaffaCakes118_ffb84b2123e36be26cc0fbff68eb7321.exe
Size

3.6MB
MD5

ffb84b2123e36be26cc0fbff68eb7321
SHA1

f1d1caf0fbba9607d2b6c2489c7a47302813a7e5
SHA256

0733a9ae261b084118efbb9abe34294a66111421a421f7f163facaefc7b388c8
SHA512

c986de876f335ec20d0bb77f490e82ea4da320613e7fd9555b33c618849cad4d35ae03467aaa5eb099cc89a66a5b780697c6bb41cd0dd165f2f00068a58351e4
SSDEEP

98304:VbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbV:3

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_ffb84b2123e36be26cc0fbff68eb7321.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_ffb84b2123e36be26cc0fbff68eb7321.exe
Key created	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_ffb84b2123e36be26cc0fbff68eb7321.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_ffb84b2123e36be26cc0fbff68eb7321.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_ffb84b2123e36be26cc0fbff68eb7321.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_ffb84b2123e36be26cc0fbff68eb7321.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1712-0-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/files/0x00090000000120f9-7.dat	upx
behavioral1/memory/1712-10-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/memory/1712-11-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/memory/1712-82-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/memory/1712-225-0x0000000000400000-0x0000000000437000-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_ffb84b2123e36be26cc0fbff68eb7321.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
1712	JaffaCakes118_ffb84b2123e36be26cc0fbff68eb7321.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1712	JaffaCakes118_ffb84b2123e36be26cc0fbff68eb7321.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1712	JaffaCakes118_ffb84b2123e36be26cc0fbff68eb7321.exe
1712	JaffaCakes118_ffb84b2123e36be26cc0fbff68eb7321.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ffb84b2123e36be26cc0fbff68eb7321.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ffb84b2123e36be26cc0fbff68eb7321.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:1712

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
3.6MB

MD5
eb35dbce987d4adbe5ead52a8d264801

SHA1
23f967be1e669caa22146e0856ba75bee4fe4253

SHA256
87b777c1025d918385eac173d7f7c4fb9caf397a68232be7fc34b8024ca4c189

SHA512
cadbb1e96ea999c881bf60deb4f58dfc58ebd4483fade761d0fe65536de91fb9f6e1772d98d667123403e957d111b4f9f9d5917b4f97bed13ee48ba6347f3fe7

Download Submit
memory/1712-0-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/1712-10-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/1712-11-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/1712-82-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/1712-225-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads