7675ab50699f3a876018fd3378946d59dfbcd5d4a3e7be7fee30f5216d9298c4

Analysis

max time kernel
148s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
07/04/2024, 19:41

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General

Target
e5b592e5d59cc9eaf78c2cc5ef554171_JaffaCakes118.exe
Size 85KB
Sample240407-yef6dsce8w
SHA256 7675ab50699f3a876018fd3378946d59dfbcd5d4a3e7be7fee30f5216d9298c4
MD5 e5b592e5d59cc9eaf78c2cc5ef554171
SHA1 257a922c0278e174d8ac2200c373028ad4ec663d
SHA512 bfd8e9257459f9d27baca1baa481ed16dfcc8ee3609c22ee7b054458c4f405f19a3400255b49a28496225aefd295cdf478cfe3ef8c76ad20124fcf42196cd61e
SSDEEP 1536:SKcR4mjD9r823Fq8rUi/S8lEx1aPtOA4+ewMyI+08mIpEv6ePKc7H:SKcWmjRrz33rUp8lEx1aPtNIwdk5vx7H
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2984	KnMOA6FzUKY6psh.exe
4776	CTS.exe

Reads user/profile data of web browsers 2 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

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4332-0-0x0000000000530000-0x0000000000547000-memory.dmp	upx
behavioral2/files/0x0007000000023223-6.dat	upx
behavioral2/memory/4776-9-0x0000000000D30000-0x0000000000D47000-memory.dmp	upx
behavioral2/memory/4332-7-0x0000000000530000-0x0000000000547000-memory.dmp	upx
behavioral2/files/0x0005000000022705-13.dat	upx
behavioral2/memory/4776-40-0x0000000000D30000-0x0000000000D47000-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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	e5b592e5d59cc9eaf78c2cc5ef554171_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	e5b592e5d59cc9eaf78c2cc5ef554171_JaffaCakes118.exe
File created	C:\Windows\CTS.exe	CTS.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	4332	e5b592e5d59cc9eaf78c2cc5ef554171_JaffaCakes118.exe
Token: SeDebugPrivilege	4776	CTS.exe
Token: SeBackupPrivilege	2648	dw20.exe
Token: SeBackupPrivilege	2648	dw20.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4332 wrote to memory of 2984	4332	e5b592e5d59cc9eaf78c2cc5ef554171_JaffaCakes118.exe	86
PID 4332 wrote to memory of 2984	4332	e5b592e5d59cc9eaf78c2cc5ef554171_JaffaCakes118.exe	86
PID 4332 wrote to memory of 4776	4332	e5b592e5d59cc9eaf78c2cc5ef554171_JaffaCakes118.exe	88
PID 4332 wrote to memory of 4776	4332	e5b592e5d59cc9eaf78c2cc5ef554171_JaffaCakes118.exe	88
PID 4332 wrote to memory of 4776	4332	e5b592e5d59cc9eaf78c2cc5ef554171_JaffaCakes118.exe	88
PID 2984 wrote to memory of 2648	2984	KnMOA6FzUKY6psh.exe	93
PID 2984 wrote to memory of 2648	2984	KnMOA6FzUKY6psh.exe	93

C:\Users\Admin\AppData\Local\Temp\e5b592e5d59cc9eaf78c2cc5ef554171_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e5b592e5d59cc9eaf78c2cc5ef554171_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4332
- C:\Users\Admin\AppData\Local\Temp\KnMOA6FzUKY6psh.exe
  C:\Users\Admin\AppData\Local\Temp\KnMOA6FzUKY6psh.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:2984
- - C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
    dw20.exe -x -s 804
    3⤵
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    PID:2648
- C:\Windows\CTS.exe
  "C:\Windows\CTS.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - Suspicious use of AdjustPrivilegeToken
  PID:4776

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

excel.exe_Rules.xml

Path C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
Size 352KB
SHA256 e5d6a20b2543d478634a313dfb1771e1154be28466895d52a522fb98c7c78214
MD5 55be7f9f56974953e2bf17a256160a53
SHA1 bc9332df52a216db59cecb1b5fa28cd6d3f6f7e8
SHA512 63a1e1491aa9a9eccd7dc12db3062c29148e72b30a201d5abfa0b6fc09574e7dbfe861c897f062d9a3d4955c87e44a3a75f4440cb2c5b7c28175c35001cd19bf
SSDEEP 6144:hG3BWTfqnrt3iGIhDebL6W3wxuu3i5l4p85O67L7kwUyOT0DV:h2B6StSyvkxx3ir4puF7niT0DV
MD5 SHA1 SHA512 SSDEEP

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KnMOA6FzUKY6psh.exe

Path C:\Users\Admin\AppData\Local\Temp\KnMOA6FzUKY6psh.exe
Size 56KB
SHA256 59b284d0ad4c2634938e70fae67d9048bd98422d052fbd745a9b80b5fae7ae29
MD5 e115521ba14b75f53dcdff087ec6898f
SHA1 87103a892bb514a93d485fba221bacb9da3aae25
SHA512 ab3d097bcf11bf7327a28124052b210f5fb13b9bfb9b7376cae1ba5c30182a330506935288a7fe06b7e3fdd82b57f5c31638f1c301738342819c772b346fa35a
SSDEEP 768:y+pd03sizr5lRxEvOSEfZsgZoFOZwM6rs4K7rM:hpCDr5ZCOxHoFOZwhrsr7rM
MD5 SHA1 SHA512 SSDEEP

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CTS.exe

Path C:\Windows\CTS.exe
Size 29KB
SHA256 9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2
MD5 70aa23c9229741a9b52e5ce388a883ac
SHA1 b42683e21e13de3f71db26635954d992ebe7119e
SHA512 be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5
SSDEEP 768:XocAX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIocVSEF:SKcR4mjD9r823F
MD5 SHA1 SHA512 SSDEEP

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memory/2984-27-0x00007FF8BF440000-0x00007FF8BFDE1000-memory.dmp

Download

memory/2984-28-0x00007FF8BF440000-0x00007FF8BFDE1000-memory.dmp

Download

memory/2984-29-0x0000000001110000-0x0000000001120000-memory.dmp

Download

memory/2984-39-0x00007FF8BF440000-0x00007FF8BFDE1000-memory.dmp

Download

memory/4332-0-0x0000000000530000-0x0000000000547000-memory.dmp

Download

memory/4332-7-0x0000000000530000-0x0000000000547000-memory.dmp

Download

memory/4776-9-0x0000000000D30000-0x0000000000D47000-memory.dmp

Download

memory/4776-40-0x0000000000D30000-0x0000000000D47000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads