646bf1a02ad3b8e2b99ae060afd8f1df079f09a6cf0fcae287fae18d88085b05

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

Deletes itself 1 IoCs

pid	Process
2896	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2504	zesttnsk.exe

Loads dropped DLL 2 IoCs

pid	Process
2952	dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe
2952	dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2952-0-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral1/files/0x00260000000186bb-3.dat	upx
behavioral1/memory/2952-18-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral1/memory/2504-20-0x0000000000400000-0x000000000040F000-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 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	dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2952	dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2952 wrote to memory of 2504	2952	dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe	29
PID 2952 wrote to memory of 2504	2952	dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe	29
PID 2952 wrote to memory of 2504	2952	dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe	29
PID 2952 wrote to memory of 2504	2952	dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe	29
PID 2952 wrote to memory of 2896	2952	dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe	30
PID 2952 wrote to memory of 2896	2952	dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe	30
PID 2952 wrote to memory of 2896	2952	dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe	30
PID 2952 wrote to memory of 2896	2952	dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe	30

C:\Users\Admin\AppData\Local\Temp\dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2952
- C:\Windows\SysWOW64\zesttnsk.exe
  C:\Windows\system32\zesttnsk.exe ˜‰
  2⤵
  - Executes dropped EXE
  PID:2504
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\dd667a64cd7694b410e9a5a1d4a6fdb1_JaffaCakes118.exe.bat
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2896

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

1

T1546

AppInit DLLs

1

T1546.010

Privilege Escalation

Event Triggered Execution

1

T1546

AppInit DLLs

1

T1546.010

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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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
\Windows\SysWOW64\zesttnsk.exe

Filesize
13KB

MD5
dd667a64cd7694b410e9a5a1d4a6fdb1

SHA1
1a3e102adbf979927caa1c5a5cb3a3bc617e450b

SHA256
646bf1a02ad3b8e2b99ae060afd8f1df079f09a6cf0fcae287fae18d88085b05

SHA512
73f0ecd2ebcb5ca3991cea662be83a107174fccc5c883b3d1c6007ae93418c649714bc87aa2fae47b7c2752ee0e3f2268ef31d12959f46f72ac344410f7e4129

Download Submit
memory/2504-20-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/2952-0-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/2952-9-0x0000000000030000-0x000000000003F000-memory.dmp

Filesize
60KB

Download
memory/2952-18-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download

Analysis

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