f5940237d8bb21e2dc31c1cf58be0b85596caebb95453551fda51d5c5be98193

General

Target

5640fa4981b2d0976c4792aa4cd03f73_JaffaCakes118.exe
Size

91KB
MD5

5640fa4981b2d0976c4792aa4cd03f73
SHA1

6c5a75745c6e39c43d6d39ae0d9d9b705bfee68f
SHA256

f5940237d8bb21e2dc31c1cf58be0b85596caebb95453551fda51d5c5be98193
SHA512

373a22efb583381e33ada73a0cc93d29e3c805646c0f4154f27b51a9f8772bfc253d858326ebfbf93bbe5b5f785d11eb642a47ad1b5c5a9573f0f797a23d7a91
SSDEEP

1536:s9Z3KcR4mjD9r8226+2REISePLCact2oVVYG5YyJBsPYn6JHa+XV:sr3KcWmjRrzS25Smc2WVYG5YyJuo6v

Score

7^/10

discovery persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
4916	zmA6lGT1huVwavs.exe
4456	CTS.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

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\CTS = "C:\\Windows\\CTS.exe"	5640fa4981b2d0976c4792aa4cd03f73_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1968-0-0x0000000000E20000-0x0000000000E37000-memory.dmp	upx
behavioral2/files/0x000a000000023b90-6.dat	upx
behavioral2/memory/1968-9-0x0000000000E20000-0x0000000000E37000-memory.dmp	upx
behavioral2/memory/4456-10-0x0000000000350000-0x0000000000367000-memory.dmp	upx
behavioral2/files/0x000200000002299c-14.dat	upx
behavioral2/memory/4456-42-0x0000000000350000-0x0000000000367000-memory.dmp	upx

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	5640fa4981b2d0976c4792aa4cd03f73_JaffaCakes118.exe
File created	C:\Windows\CTS.exe	CTS.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	CTS.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5640fa4981b2d0976c4792aa4cd03f73_JaffaCakes118.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dw20.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1968	5640fa4981b2d0976c4792aa4cd03f73_JaffaCakes118.exe
Token: SeDebugPrivilege	4456	CTS.exe
Token: SeBackupPrivilege	3564	dw20.exe
Token: SeBackupPrivilege	3564	dw20.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1968 wrote to memory of 4916	1968	5640fa4981b2d0976c4792aa4cd03f73_JaffaCakes118.exe	84
PID 1968 wrote to memory of 4916	1968	5640fa4981b2d0976c4792aa4cd03f73_JaffaCakes118.exe	84
PID 1968 wrote to memory of 4456	1968	5640fa4981b2d0976c4792aa4cd03f73_JaffaCakes118.exe	86
PID 1968 wrote to memory of 4456	1968	5640fa4981b2d0976c4792aa4cd03f73_JaffaCakes118.exe	86
PID 1968 wrote to memory of 4456	1968	5640fa4981b2d0976c4792aa4cd03f73_JaffaCakes118.exe	86
PID 4916 wrote to memory of 3564	4916	zmA6lGT1huVwavs.exe	87
PID 4916 wrote to memory of 3564	4916	zmA6lGT1huVwavs.exe	87

C:\Users\Admin\AppData\Local\Temp\5640fa4981b2d0976c4792aa4cd03f73_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5640fa4981b2d0976c4792aa4cd03f73_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1968
- C:\Users\Admin\AppData\Local\Temp\zmA6lGT1huVwavs.exe
  C:\Users\Admin\AppData\Local\Temp\zmA6lGT1huVwavs.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:4916
- - C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
    dw20.exe -x -s 792
    3⤵
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    PID:3564
- C:\Windows\CTS.exe
  "C:\Windows\CTS.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:4456

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

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
356KB

MD5
8450f1c09d67730ad3008681470c5686

SHA1
98722ab539fa4d862d42bb12813578d4ec5bb3e8

SHA256
5b77797dbfc9ee150f8f0633425416a81e4b9273c72ff47d87a1fe62f77f126a

SHA512
53cc2b0696fcca4f48ef63d52e767d4af90ba3bb014ce8a518a850486c77ef637930ea14c496879e0bf4199a3a927dccc7eadca12538800ba1a23cac260bd6e3

Download Submit
C:\Users\Admin\AppData\Local\Temp\zmA6lGT1huVwavs.exe

Filesize
56KB

MD5
e115521ba14b75f53dcdff087ec6898f

SHA1
87103a892bb514a93d485fba221bacb9da3aae25

SHA256
59b284d0ad4c2634938e70fae67d9048bd98422d052fbd745a9b80b5fae7ae29

SHA512
ab3d097bcf11bf7327a28124052b210f5fb13b9bfb9b7376cae1ba5c30182a330506935288a7fe06b7e3fdd82b57f5c31638f1c301738342819c772b346fa35a

Download Submit
C:\Windows\CTS.exe

Filesize
35KB

MD5
93e5f18caebd8d4a2c893e40e5f38232

SHA1
fd55c4e6bcd108bce60ea719c06dc9c4d0adafa6

SHA256
a66c4b98becac2f69cb107cd087d7a2ca9ef511bc3b83367b1f440f11dd159a8

SHA512
986583610d27caae2080834301d072557c5d2c85e33f0d19ab1245d7eae8db146397461572ddb3d491be16f3af210720d54267dac838fdad8fe34afa3d6b7f54

Download Submit
memory/1968-0-0x0000000000E20000-0x0000000000E37000-memory.dmp

Filesize
92KB

Download
memory/1968-9-0x0000000000E20000-0x0000000000E37000-memory.dmp

Filesize
92KB

Download
memory/4456-10-0x0000000000350000-0x0000000000367000-memory.dmp

Filesize
92KB

Download
memory/4456-42-0x0000000000350000-0x0000000000367000-memory.dmp

Filesize
92KB

Download
memory/4916-21-0x00007FFCD46F5000-0x00007FFCD46F6000-memory.dmp

Filesize
4KB

Download
memory/4916-29-0x00007FFCD4440000-0x00007FFCD4DE1000-memory.dmp

Filesize
9.6MB

Download
memory/4916-30-0x00007FFCD4440000-0x00007FFCD4DE1000-memory.dmp

Filesize
9.6MB

Download
memory/4916-37-0x00007FFCD4440000-0x00007FFCD4DE1000-memory.dmp

Filesize
9.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads