646bf1a02ad3b8e2b99ae060afd8f1df079f09a6cf0fcae287fae18d88085b05

Analysis

max time kernel
150s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
13/09/2024, 01:22

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General

Target

dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe
Size

13KB
MD5

dd667a64cd7694b410e9a5a1d4a6fdb1
SHA1

1a3e102adbf979927caa1c5a5cb3a3bc617e450b
SHA256

646bf1a02ad3b8e2b99ae060afd8f1df079f09a6cf0fcae287fae18d88085b05
SHA512

73f0ecd2ebcb5ca3991cea662be83a107174fccc5c883b3d1c6007ae93418c649714bc87aa2fae47b7c2752ee0e3f2268ef31d12959f46f72ac344410f7e4129
SSDEEP

384:IhWw8KGaw0dvcZTGdAb09nYV/wgWI0l4+:IhWwR5w0dElG2ba1gWD

Score

8^/10

discovery persistence privilege_escalation upx

Malware Config

Signatures

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

Executes dropped EXE 1 IoCs

pid	Process
440	zesttnsk.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4072-0-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral2/files/0x0002000000022d14-4.dat	upx
behavioral2/memory/4072-8-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral2/memory/440-11-0x0000000000400000-0x000000000040F000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\zesttns.dll	dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\zesttnsk.exe	dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\zesttnsk.exe	dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe

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	dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zesttnsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4072	dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe
4072	dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4072 wrote to memory of 440	4072	dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe	91
PID 4072 wrote to memory of 440	4072	dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe	91
PID 4072 wrote to memory of 440	4072	dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe	91
PID 4072 wrote to memory of 2500	4072	dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe	92
PID 4072 wrote to memory of 2500	4072	dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe	92
PID 4072 wrote to memory of 2500	4072	dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe	92

C:\Users\Admin\AppData\Local\Temp\dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4072
- C:\Windows\SysWOW64\zesttnsk.exe
  C:\Windows\system32\zesttnsk.exe ˜‰
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:440
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe.bat
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2500

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Privilege Escalation

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe.bat

Filesize
210B

MD5
0468eb8ba17d3deddd9e5fe2bc01f815

SHA1
519fb2543dc50dc9bcb3e44c167924c00f364dd4

SHA256
ce44120cce3e95c6c100f7c5a2d00ac421ebdf2ab8ce3812932192bdcc8e3f97

SHA512
7803a33c0d16fca366cca293d28896033e5c77992c3eb46db58c040e332b46d925736807120b1a19aef23023b0798447066236c3a329d6180f33d63b9e3184ef

Download Submit
C:\Windows\SysWOW64\zesttnsk.exe

Filesize
13KB

MD5
dd667a64cd7694b410e9a5a1d4a6fdb1

SHA1
1a3e102adbf979927caa1c5a5cb3a3bc617e450b

SHA256
646bf1a02ad3b8e2b99ae060afd8f1df079f09a6cf0fcae287fae18d88085b05

SHA512
73f0ecd2ebcb5ca3991cea662be83a107174fccc5c883b3d1c6007ae93418c649714bc87aa2fae47b7c2752ee0e3f2268ef31d12959f46f72ac344410f7e4129

Download Submit
memory/440-11-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/4072-0-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/4072-8-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download