51a761b0208bb62f02185a9ea180f8305fdea2c1a5bcb4e96076404fde514adb

General

Target

697bcbc39bafed7dfce66c0392e5d9dc_JaffaCakes118.exe
Size

16KB
MD5

697bcbc39bafed7dfce66c0392e5d9dc
SHA1

0d1376d61eb9d91dd0c73f61f84ba39284d4ea8e
SHA256

51a761b0208bb62f02185a9ea180f8305fdea2c1a5bcb4e96076404fde514adb
SHA512

0f5707235698aa677d6150164c7ffa60418f0a757a074072578ada36fd9c2072539b36ec515b8f35586f570d0d4a23ba5b0b32a46c1bd941817bd4b506b0c6c2
SSDEEP

384:bfZQqociDxVqjnxIyUDcc2n98MVTJ/UORwaW/ib:piD8nxIr72JTJ8OWP/

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
3040	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2044	lenschk.exe

Loads dropped DLL 2 IoCs

pid	Process
808	697bcbc39bafed7dfce66c0392e5d9dc_JaffaCakes118.exe
808	697bcbc39bafed7dfce66c0392e5d9dc_JaffaCakes118.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/808-1-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral1/files/0x0008000000015d5f-3.dat	upx
behavioral1/memory/2044-12-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral1/memory/808-13-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral1/memory/2044-14-0x0000000000400000-0x000000000040F000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\lensch.dll	697bcbc39bafed7dfce66c0392e5d9dc_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\lenschk.exe	697bcbc39bafed7dfce66c0392e5d9dc_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\lenschk.exe	697bcbc39bafed7dfce66c0392e5d9dc_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	697bcbc39bafed7dfce66c0392e5d9dc_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 808 wrote to memory of 2044	808	697bcbc39bafed7dfce66c0392e5d9dc_JaffaCakes118.exe	30
PID 808 wrote to memory of 2044	808	697bcbc39bafed7dfce66c0392e5d9dc_JaffaCakes118.exe	30
PID 808 wrote to memory of 2044	808	697bcbc39bafed7dfce66c0392e5d9dc_JaffaCakes118.exe	30
PID 808 wrote to memory of 2044	808	697bcbc39bafed7dfce66c0392e5d9dc_JaffaCakes118.exe	30
PID 808 wrote to memory of 3040	808	697bcbc39bafed7dfce66c0392e5d9dc_JaffaCakes118.exe	31
PID 808 wrote to memory of 3040	808	697bcbc39bafed7dfce66c0392e5d9dc_JaffaCakes118.exe	31
PID 808 wrote to memory of 3040	808	697bcbc39bafed7dfce66c0392e5d9dc_JaffaCakes118.exe	31
PID 808 wrote to memory of 3040	808	697bcbc39bafed7dfce66c0392e5d9dc_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\697bcbc39bafed7dfce66c0392e5d9dc_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\697bcbc39bafed7dfce66c0392e5d9dc_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:808
- C:\Windows\SysWOW64\lenschk.exe
  C:\Windows\system32\lenschk.exe ˜‰
  2⤵
  - Executes dropped EXE
  PID:2044
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\697bcbc39bafed7dfce66c0392e5d9dc_JaffaCakes118.exe.bat
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3040

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\697bcbc39bafed7dfce66c0392e5d9dc_JaffaCakes118.exe.bat

Filesize
210B

MD5
0b705b3f77c039073d7d30af2dc7078c

SHA1
549a89a30dbbc3e2bdf6c68511ae29e6d8e1836b

SHA256
da2b0cd602a934a6bdccab9f56a05af27fb18118cebd8a6c4a75708cae99ce57

SHA512
2b8e3bd4f8ad06d7cbffb13c07e652cf46a07d1bbef0404efa62f59e0f482c6959912054d35f3bd388c775448f800c3194964d10713ba361a7d93a788fba83a9

Download Submit
\Windows\SysWOW64\lenschk.exe

Filesize
16KB

MD5
697bcbc39bafed7dfce66c0392e5d9dc

SHA1
0d1376d61eb9d91dd0c73f61f84ba39284d4ea8e

SHA256
51a761b0208bb62f02185a9ea180f8305fdea2c1a5bcb4e96076404fde514adb

SHA512
0f5707235698aa677d6150164c7ffa60418f0a757a074072578ada36fd9c2072539b36ec515b8f35586f570d0d4a23ba5b0b32a46c1bd941817bd4b506b0c6c2

Download Submit
memory/808-1-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/808-11-0x0000000000240000-0x000000000024F000-memory.dmp

Filesize
60KB

Download
memory/808-10-0x0000000000240000-0x000000000024F000-memory.dmp

Filesize
60KB

Download
memory/808-13-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/808-18-0x0000000000240000-0x000000000024F000-memory.dmp

Filesize
60KB

Download
memory/808-17-0x0000000000240000-0x000000000024F000-memory.dmp

Filesize
60KB

Download
memory/2044-12-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/2044-14-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download

Analysis

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