d59692b6b2068e3e889d115b0870646194f9b1166dc9fd7fa8626017b6c4bd30

General

Target

a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe
Size

139KB
MD5

a9ee9939d46efe286708b9283280e39a
SHA1

67962c4adead5ed7c353ae17308d9ad1e1722b05
SHA256

d59692b6b2068e3e889d115b0870646194f9b1166dc9fd7fa8626017b6c4bd30
SHA512

4c2a3e2cf68b0dc5d5feb9305e27657cc995206e05187712e3c36796e8fc50a86052aab4eb7b7b1dd2fa33f7554b7e8f835eac8937be6e25767ce8de32e18a25
SSDEEP

1536:xbyWHRHOmj4EkRKoM16gDZyL5EVhAnGqqqqqq1qqqqqVAptsm0haGbydJiEWl/is:hbHRLj48oM11Xhx10ha2qrngPY

Score

10^/10

discovery evasion persistence privilege_escalation upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Users\\Admin\\AppData\\Roaming\\csrss.exe\""	a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Users\\Admin\\AppData\\Roaming\\csrss.exe\""	csrss.exe

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
964	netsh.exe

Executes dropped EXE 2 IoCs

pid	Process
2680	csrss.exe
2644	csrss.exe

UPX packed file 14 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4776-0-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral2/memory/4776-2-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral2/memory/4776-4-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral2/memory/4776-26-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral2/memory/2644-30-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral2/memory/2644-32-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral2/memory/2644-35-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral2/memory/2644-36-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral2/memory/2644-37-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral2/memory/2644-38-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral2/memory/2644-41-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral2/memory/2644-44-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral2/memory/2644-48-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral2/memory/2644-49-0x0000000000400000-0x0000000000425000-memory.dmp	upx

Adds 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\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSWUpdate = "\"C:\\Users\\Admin\\AppData\\Roaming\\csrss.exe\""	a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MSWUpdate = "\"C:\\Users\\Admin\\AppData\\Roaming\\csrss.exe\""	a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSWUpdate = "\"C:\\Users\\Admin\\AppData\\Roaming\\csrss.exe\""	csrss.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MSWUpdate = "\"C:\\Users\\Admin\\AppData\\Roaming\\csrss.exe\""	csrss.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2092 set thread context of 4776	2092	a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe	87
PID 2680 set thread context of 2644	2680	csrss.exe	93

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 5 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	a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrss.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrss.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4776	a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe
2644	csrss.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 2092 wrote to memory of 4776	2092	a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe	87
PID 2092 wrote to memory of 4776	2092	a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe	87
PID 2092 wrote to memory of 4776	2092	a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe	87
PID 2092 wrote to memory of 4776	2092	a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe	87
PID 2092 wrote to memory of 4776	2092	a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe	87
PID 2092 wrote to memory of 4776	2092	a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe	87
PID 2092 wrote to memory of 4776	2092	a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe	87
PID 2092 wrote to memory of 4776	2092	a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe	87
PID 4776 wrote to memory of 964	4776	a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe	88
PID 4776 wrote to memory of 964	4776	a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe	88
PID 4776 wrote to memory of 964	4776	a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe	88
PID 4776 wrote to memory of 2680	4776	a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe	90
PID 4776 wrote to memory of 2680	4776	a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe	90
PID 4776 wrote to memory of 2680	4776	a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe	90
PID 2680 wrote to memory of 2644	2680	csrss.exe	93
PID 2680 wrote to memory of 2644	2680	csrss.exe	93
PID 2680 wrote to memory of 2644	2680	csrss.exe	93
PID 2680 wrote to memory of 2644	2680	csrss.exe	93
PID 2680 wrote to memory of 2644	2680	csrss.exe	93
PID 2680 wrote to memory of 2644	2680	csrss.exe	93
PID 2680 wrote to memory of 2644	2680	csrss.exe	93
PID 2680 wrote to memory of 2644	2680	csrss.exe	93

C:\Users\Admin\AppData\Local\Temp\a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2092
- C:\Users\Admin\AppData\Local\Temp\a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4776
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\csrss.exe" CityScape Enable
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:964
- - C:\Users\Admin\AppData\Roaming\csrss.exe
    /d C:\Users\Admin\AppData\Local\Temp\a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2680
  - - C:\Users\Admin\AppData\Roaming\csrss.exe
      /d C:\Users\Admin\AppData\Local\Temp\a9ee9939d46efe286708b9283280e39a_JaffaCakes118.exe
      4⤵
      Modifies WinLogon for persistence
      Executes dropped EXE
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      PID:2644

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

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
139KB

MD5
bfff4accb83512cf122f6e8ba3eb0f2d

SHA1
b5cd2bbddd29ef8a33481249ff900dcf8c4e5faf

SHA256
387a09217140b10559b4a5c17976bcce92a22e5a8850e06e80cb56084b9b99a9

SHA512
de89708f8115bf65e71c2404adf32d92025d7f24e01c968a03ed624e43ded37fff372f7971d5c3f58f977f74f794f3cd076fab2ef1cb7c49ffb02847bc5e84c1

Download Submit
memory/2644-32-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2644-36-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2644-49-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2644-48-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2644-30-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2644-44-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2644-35-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2644-41-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2644-37-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2644-38-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/4776-4-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/4776-0-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/4776-26-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/4776-2-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads