988b91c6518652092b514ec4766096675f07aa153b994eec06798a401f89a7e1

General

Target

835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe
Size

89KB
MD5

835a4235d79cc69a21adecf3442e09e2
SHA1

8b2bdeb907f9f97802cd333b80d81f6620ed117d
SHA256

988b91c6518652092b514ec4766096675f07aa153b994eec06798a401f89a7e1
SHA512

2f32e73e6097d09830b15cb215b86e50f5f42c985d18a64d2773242098e1b445bdd5f63de5825bf028176c7a100cda9e2d29a40db7c0580b08494c1b6968e688
SSDEEP

1536:UyXhnsmzr/mycOGYekxjPkyvS1zIaSt8ujRSYvm9ipo7tRSKz00bXcVne:UasGhPwSt88RSYv+iu7jSq/

Score

10^/10

discovery evasion persistence upx

Malware Config

Signatures

Modifies firewall policy service 3 TTPs 2 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Users\Public\smss.exe = "C:\\Users\\Public\\smss.exe:*:Enabled:Microsoft Utility 64"	835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
1064	smss.exe
2864	smss.exe

Loads dropped DLL 3 IoCs

pid	Process
2056	835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe
2056	835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe
1064	smss.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3032-0-0x0000000000400000-0x0000000000427000-memory.dmp	upx
behavioral1/memory/3032-17-0x0000000000400000-0x0000000000427000-memory.dmp	upx
behavioral1/files/0x0009000000012029-23.dat	upx
behavioral1/memory/2056-24-0x0000000002F50000-0x0000000002F77000-memory.dmp	upx
behavioral1/memory/1064-34-0x0000000000400000-0x0000000000427000-memory.dmp	upx
behavioral1/memory/1064-53-0x0000000000400000-0x0000000000427000-memory.dmp	upx

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-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Windows\CurrentVersion\Run\Microsoft Utility 64 = "C:\\Users\\Public\\smss.exe"	835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Microsoft Utility 64 = "C:\\Users\\Public\\smss.exe"	835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3032 set thread context of 2056	3032	835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe	30
PID 1064 set thread context of 2864	1064	smss.exe	32

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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	835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	smss.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3032	835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe
1064	smss.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 3032 wrote to memory of 2056	3032	835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe	30
PID 3032 wrote to memory of 2056	3032	835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe	30
PID 3032 wrote to memory of 2056	3032	835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe	30
PID 3032 wrote to memory of 2056	3032	835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe	30
PID 3032 wrote to memory of 2056	3032	835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe	30
PID 3032 wrote to memory of 2056	3032	835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe	30
PID 3032 wrote to memory of 2056	3032	835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe	30
PID 3032 wrote to memory of 2056	3032	835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe	30
PID 3032 wrote to memory of 2056	3032	835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe	30
PID 2056 wrote to memory of 1064	2056	835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe	31
PID 2056 wrote to memory of 1064	2056	835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe	31
PID 2056 wrote to memory of 1064	2056	835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe	31
PID 2056 wrote to memory of 1064	2056	835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe	31
PID 1064 wrote to memory of 2864	1064	smss.exe	32
PID 1064 wrote to memory of 2864	1064	smss.exe	32
PID 1064 wrote to memory of 2864	1064	smss.exe	32
PID 1064 wrote to memory of 2864	1064	smss.exe	32
PID 1064 wrote to memory of 2864	1064	smss.exe	32
PID 1064 wrote to memory of 2864	1064	smss.exe	32
PID 1064 wrote to memory of 2864	1064	smss.exe	32
PID 1064 wrote to memory of 2864	1064	smss.exe	32
PID 1064 wrote to memory of 2864	1064	smss.exe	32

C:\Users\Admin\AppData\Local\Temp\835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3032
- C:\Users\Admin\AppData\Local\Temp\835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\835a4235d79cc69a21adecf3442e09e2_JaffaCakes118.exe"
  2⤵
  - Modifies firewall policy service
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2056
- - C:\Users\Public\smss.exe
    "C:\Users\Public\smss.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1064
  - - C:\Users\Public\smss.exe
      "C:\Users\Public\smss.exe"
      4⤵
      Executes dropped EXE
      PID:2864

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Public\smss.exe

Filesize
89KB

MD5
835a4235d79cc69a21adecf3442e09e2

SHA1
8b2bdeb907f9f97802cd333b80d81f6620ed117d

SHA256
988b91c6518652092b514ec4766096675f07aa153b994eec06798a401f89a7e1

SHA512
2f32e73e6097d09830b15cb215b86e50f5f42c985d18a64d2773242098e1b445bdd5f63de5825bf028176c7a100cda9e2d29a40db7c0580b08494c1b6968e688

Download Submit
memory/1064-53-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1064-38-0x0000000000230000-0x0000000000257000-memory.dmp

Filesize
156KB

Download
memory/1064-34-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/2056-24-0x0000000002F50000-0x0000000002F77000-memory.dmp

Filesize
156KB

Download
memory/2056-31-0x0000000000410000-0x00000000004EF000-memory.dmp

Filesize
892KB

Download
memory/2056-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2056-14-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2056-4-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2056-18-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2056-19-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2056-8-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2056-10-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2056-6-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2864-55-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2864-56-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/3032-0-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/3032-17-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/3032-3-0x00000000003C0000-0x00000000003E7000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads