cycbot | a5b4361301232316b5305d050be378f72bdc38df20690327fd5068a69770de3d

General

Target

fc809c5c40877d5b5dcfc41eea8c2d43_JaffaCakes118.exe
Size

167KB
MD5

fc809c5c40877d5b5dcfc41eea8c2d43
SHA1

d7599868b258d075f6ca67789384344f0163ec5b
SHA256

a5b4361301232316b5305d050be378f72bdc38df20690327fd5068a69770de3d
SHA512

2f27e97882c5c82edc2cac6e779cb410b01a57b62fd9b828746d3a873995ca06232772fcba3b65d53128381fee771db22a28d1b3fdbf1365d21db6b7fd614ead
SSDEEP

3072:6TxfKkImHxP14hf/ICluxM4VTXcHKsJmnJ85GMf+b4676nVT/MC:kNPIkxNof/ImkDVSJSJ8595VT/

Score

10^/10

cycbot backdoor discovery persistence rat upx

Malware Config

Signatures

Cycbot
Cycbot is a backdoor and trojan written in C++..
backdoor rat cycbot
Cycbot family
cycbot

Detects Cycbot payload 5 IoCs

Cycbot is a backdoor and trojan written in C++.

resource	yara_rule
behavioral2/memory/4920-10-0x0000000000400000-0x0000000000446000-memory.dmp	family_cycbot
behavioral2/memory/4496-14-0x0000000000400000-0x0000000000446000-memory.dmp	family_cycbot
behavioral2/memory/4496-71-0x0000000000400000-0x0000000000446000-memory.dmp	family_cycbot
behavioral2/memory/1440-76-0x0000000000400000-0x0000000000446000-memory.dmp	family_cycbot
behavioral2/memory/4496-188-0x0000000000400000-0x0000000000446000-memory.dmp	family_cycbot

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\conhost = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\conhost.exe"	fc809c5c40877d5b5dcfc41eea8c2d43_JaffaCakes118.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4496-2-0x0000000000400000-0x0000000000446000-memory.dmp	upx
behavioral2/memory/4920-10-0x0000000000400000-0x0000000000446000-memory.dmp	upx
behavioral2/memory/4496-14-0x0000000000400000-0x0000000000446000-memory.dmp	upx
behavioral2/memory/4496-71-0x0000000000400000-0x0000000000446000-memory.dmp	upx
behavioral2/memory/1440-74-0x0000000000400000-0x0000000000446000-memory.dmp	upx
behavioral2/memory/1440-76-0x0000000000400000-0x0000000000446000-memory.dmp	upx
behavioral2/memory/4496-188-0x0000000000400000-0x0000000000446000-memory.dmp	upx

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	fc809c5c40877d5b5dcfc41eea8c2d43_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fc809c5c40877d5b5dcfc41eea8c2d43_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fc809c5c40877d5b5dcfc41eea8c2d43_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4496 wrote to memory of 4920	4496	fc809c5c40877d5b5dcfc41eea8c2d43_JaffaCakes118.exe	83
PID 4496 wrote to memory of 4920	4496	fc809c5c40877d5b5dcfc41eea8c2d43_JaffaCakes118.exe	83
PID 4496 wrote to memory of 4920	4496	fc809c5c40877d5b5dcfc41eea8c2d43_JaffaCakes118.exe	83
PID 4496 wrote to memory of 1440	4496	fc809c5c40877d5b5dcfc41eea8c2d43_JaffaCakes118.exe	93
PID 4496 wrote to memory of 1440	4496	fc809c5c40877d5b5dcfc41eea8c2d43_JaffaCakes118.exe	93
PID 4496 wrote to memory of 1440	4496	fc809c5c40877d5b5dcfc41eea8c2d43_JaffaCakes118.exe	93

C:\Users\Admin\AppData\Local\Temp\fc809c5c40877d5b5dcfc41eea8c2d43_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fc809c5c40877d5b5dcfc41eea8c2d43_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4496
- C:\Users\Admin\AppData\Local\Temp\fc809c5c40877d5b5dcfc41eea8c2d43_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\fc809c5c40877d5b5dcfc41eea8c2d43_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\dwm.exe%C:\Users\Admin\AppData\Roaming
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4920
- C:\Users\Admin\AppData\Local\Temp\fc809c5c40877d5b5dcfc41eea8c2d43_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\fc809c5c40877d5b5dcfc41eea8c2d43_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1440

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

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\Roaming\C79A.FC8

Filesize
1KB

MD5
8560e61fde263c4cce55e5eddcddb56c

SHA1
097b97478d78c73445b5e1faf3ec91aa4e50e943

SHA256
d739d4a542a0e3877b539f6e88ae6c0b6be9f17c2763b54f95c004b9c66922f3

SHA512
55aef4646e604b13bc97aa9ba7126cd4ed94ba4e0599af7ca614b162058f134af3329a6bcbe88184a7dee147059322de573b697644b89bea8440520f8717489e

Download Submit
C:\Users\Admin\AppData\Roaming\C79A.FC8

Filesize
600B

MD5
6a8b94d425896d9fa29ec29a31584496

SHA1
5204725d33bc7525f471d8299a5285c8aea85c67

SHA256
3f218ab03de3841b9301c0413c8aee17060f05ce632d6d51ff4d9a5775bd7b83

SHA512
d6ab5651823a3c6c720a28b41254ac96865c71e86b2eddd73af829ab63a7ec5fdabcd5eb62bbce9adb149906f41aaddeb28ac6b6dca5439af4a72d7b9aca8d19

Download Submit
C:\Users\Admin\AppData\Roaming\C79A.FC8

Filesize
996B

MD5
bc81c767d9e294a5de8407af78957d34

SHA1
68fc1748111d2b82e471dc76bdb63cfc5380f56c

SHA256
3604acf8af51558d33a006eee2341db08453eee3d4e8ea73a2328dea9b81949f

SHA512
3e0764099e212f12013425c86638c23af170506d3a02d2ea477b7ebc45bd12d97894643461e039995a4e190ab3026f716532adc4b82b5227e9d7c191fe198e7e

Download Submit
memory/1440-73-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/1440-74-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/1440-76-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/4496-1-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/4496-2-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/4496-14-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/4496-71-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/4496-188-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/4920-10-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads