a08b75fc1e20e33a702d23ed2d67707e12b742656f832d16f810d7f45877ec8e

General

Target

b57e931260b95212ae30894a6a82aeba_JaffaCakes118.exe
Size

13KB
MD5

b57e931260b95212ae30894a6a82aeba
SHA1

6789e24c5eb03b3d7c87d2da256eab6941fea4f5
SHA256

a08b75fc1e20e33a702d23ed2d67707e12b742656f832d16f810d7f45877ec8e
SHA512

164b23e0c18ea80e390b8baa8d71ae42be783cf470cad1c9a06823291a900f1ad015195e8593d8313b451f2bf497427aedddbd5968a60eac0c9e254494569dca
SSDEEP

384:3Tz9CDsxpRrB7y1Xk65cntevN8yCAt2Oefl0IvH+:3TcsxPUR5ctev6yCAtKZ

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
2980	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2764	docyanxk.exe

Loads dropped DLL 2 IoCs

pid	Process
2408	b57e931260b95212ae30894a6a82aeba_JaffaCakes118.exe
2408	b57e931260b95212ae30894a6a82aeba_JaffaCakes118.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2408-0-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral1/files/0x0030000000019448-3.dat	upx
behavioral1/memory/2764-10-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral1/memory/2408-19-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral1/memory/2764-21-0x0000000000400000-0x000000000040F000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\docyanx.dll	b57e931260b95212ae30894a6a82aeba_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\docyanxk.exe	b57e931260b95212ae30894a6a82aeba_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\docyanxk.exe	b57e931260b95212ae30894a6a82aeba_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	b57e931260b95212ae30894a6a82aeba_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2408	b57e931260b95212ae30894a6a82aeba_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2408 wrote to memory of 2764	2408	b57e931260b95212ae30894a6a82aeba_JaffaCakes118.exe	30
PID 2408 wrote to memory of 2764	2408	b57e931260b95212ae30894a6a82aeba_JaffaCakes118.exe	30
PID 2408 wrote to memory of 2764	2408	b57e931260b95212ae30894a6a82aeba_JaffaCakes118.exe	30
PID 2408 wrote to memory of 2764	2408	b57e931260b95212ae30894a6a82aeba_JaffaCakes118.exe	30
PID 2408 wrote to memory of 2980	2408	b57e931260b95212ae30894a6a82aeba_JaffaCakes118.exe	31
PID 2408 wrote to memory of 2980	2408	b57e931260b95212ae30894a6a82aeba_JaffaCakes118.exe	31
PID 2408 wrote to memory of 2980	2408	b57e931260b95212ae30894a6a82aeba_JaffaCakes118.exe	31
PID 2408 wrote to memory of 2980	2408	b57e931260b95212ae30894a6a82aeba_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\b57e931260b95212ae30894a6a82aeba_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b57e931260b95212ae30894a6a82aeba_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:2408
- C:\Windows\SysWOW64\docyanxk.exe
  C:\Windows\system32\docyanxk.exe ˜‰
  2⤵
  - Executes dropped EXE
  PID:2764
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\b57e931260b95212ae30894a6a82aeba_JaffaCakes118.exe.bat
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2980

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\b57e931260b95212ae30894a6a82aeba_JaffaCakes118.exe.bat

Filesize
210B

MD5
7e7f7bb4c07bdf783dc89d64ac13ae39

SHA1
d31284cec33829042c3f709c15a8eaf786e29609

SHA256
bdda3928bbabfe9aa8e8dd98e7518b5de2735d4189f4897113398527f65f0519

SHA512
9ac6764a0eac8a7bb6219376742f3185388aca781885f0470a1095cc8fb8dd6d3ecc3e37a7ba7b359029c591381b934d9666c9995ee2bee89da7e8757cf4a887

Download Submit
\Windows\SysWOW64\docyanxk.exe

Filesize
13KB

MD5
b57e931260b95212ae30894a6a82aeba

SHA1
6789e24c5eb03b3d7c87d2da256eab6941fea4f5

SHA256
a08b75fc1e20e33a702d23ed2d67707e12b742656f832d16f810d7f45877ec8e

SHA512
164b23e0c18ea80e390b8baa8d71ae42be783cf470cad1c9a06823291a900f1ad015195e8593d8313b451f2bf497427aedddbd5968a60eac0c9e254494569dca

Download Submit
memory/2408-0-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/2408-19-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/2764-10-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/2764-21-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download

Analysis

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