fd2dca2dec23ffeb2002a2b2cc03d99c385691ce35663322e396fee33d68bcaa

General

Target

acc3d35526c5a6e0765673d9d6fac117_JaffaCakes118.exe
Size

15KB
MD5

acc3d35526c5a6e0765673d9d6fac117
SHA1

3657957ff5c77a98826b6ecd5ef771f441dbc781
SHA256

fd2dca2dec23ffeb2002a2b2cc03d99c385691ce35663322e396fee33d68bcaa
SHA512

da584ce3d9a34a35848c3a5dc4d08ddd285e8eca718fae29ce98181877b2b2748e716d15c8133ba3a05ff1c310892a48221ce55b3143605aba29182c347dbca2
SSDEEP

384:rWICPj4MCyspApIZecVtpOL2kPW0JWHCb9GEqO:rx04MDLpSC2e9WiJGE

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
2976	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2384	lenschk.exe

Loads dropped DLL 2 IoCs

pid	Process
1308	acc3d35526c5a6e0765673d9d6fac117_JaffaCakes118.exe
1308	acc3d35526c5a6e0765673d9d6fac117_JaffaCakes118.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1308-0-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral1/files/0x000700000001956c-3.dat	upx
behavioral1/memory/1308-10-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral1/memory/2384-12-0x0000000000400000-0x000000000040F000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\lenschk.exe	acc3d35526c5a6e0765673d9d6fac117_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\lenschk.exe	acc3d35526c5a6e0765673d9d6fac117_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\lensch.dll	acc3d35526c5a6e0765673d9d6fac117_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	acc3d35526c5a6e0765673d9d6fac117_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 1308 wrote to memory of 2384	1308	acc3d35526c5a6e0765673d9d6fac117_JaffaCakes118.exe	29
PID 1308 wrote to memory of 2384	1308	acc3d35526c5a6e0765673d9d6fac117_JaffaCakes118.exe	29
PID 1308 wrote to memory of 2384	1308	acc3d35526c5a6e0765673d9d6fac117_JaffaCakes118.exe	29
PID 1308 wrote to memory of 2384	1308	acc3d35526c5a6e0765673d9d6fac117_JaffaCakes118.exe	29
PID 1308 wrote to memory of 2976	1308	acc3d35526c5a6e0765673d9d6fac117_JaffaCakes118.exe	30
PID 1308 wrote to memory of 2976	1308	acc3d35526c5a6e0765673d9d6fac117_JaffaCakes118.exe	30
PID 1308 wrote to memory of 2976	1308	acc3d35526c5a6e0765673d9d6fac117_JaffaCakes118.exe	30
PID 1308 wrote to memory of 2976	1308	acc3d35526c5a6e0765673d9d6fac117_JaffaCakes118.exe	30

C:\Users\Admin\AppData\Local\Temp\acc3d35526c5a6e0765673d9d6fac117_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\acc3d35526c5a6e0765673d9d6fac117_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1308
- C:\Windows\SysWOW64\lenschk.exe
  C:\Windows\system32\lenschk.exe ˜‰
  2⤵
  - Executes dropped EXE
  PID:2384
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\acc3d35526c5a6e0765673d9d6fac117_JaffaCakes118.exe.bat
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2976

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\acc3d35526c5a6e0765673d9d6fac117_JaffaCakes118.exe.bat

Filesize
210B

MD5
a218e64784c653d0413a82bb0b5f3221

SHA1
de3d4ceee4c3e31e8bf83446aa3f166f5c57526e

SHA256
ca6d9bf1f0eeda799bfef86094d6cd54bdfd8dd9780a9786d6ff2af77fb79e4e

SHA512
286d246057ff6c27fec9f0aaa5f8d3a924be44425b53f643252dd0fdf54ddeec76b233768bc12c7bae82b0d8ad60e419a29d3d4acff1bdf5b921064ddc6dfb93

Download Submit
\Windows\SysWOW64\lenschk.exe

Filesize
15KB

MD5
acc3d35526c5a6e0765673d9d6fac117

SHA1
3657957ff5c77a98826b6ecd5ef771f441dbc781

SHA256
fd2dca2dec23ffeb2002a2b2cc03d99c385691ce35663322e396fee33d68bcaa

SHA512
da584ce3d9a34a35848c3a5dc4d08ddd285e8eca718fae29ce98181877b2b2748e716d15c8133ba3a05ff1c310892a48221ce55b3143605aba29182c347dbca2

Download Submit
memory/1308-0-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/1308-10-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/2384-12-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download

Analysis

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