cycbot | 4c8ae591040897908e21a857126d6a7f0854c1a911d9c3df8a4cce867823e0b4

General

Target

JaffaCakes118_8b1a87bb29a899a517111137b23e62cb.exe
Size

164KB
MD5

8b1a87bb29a899a517111137b23e62cb
SHA1

e7d186ab00409c0e1a3f6457f1667e0b729fd47f
SHA256

4c8ae591040897908e21a857126d6a7f0854c1a911d9c3df8a4cce867823e0b4
SHA512

5d4e85e9cdd200e8d2a0686dad4ffe585aa68c70100402b076f1335209272582432a1be29ac1c4769ff68da965ccd6bb070870206d0c3f9a72fe5e95bfc08cfe
SSDEEP

3072:WaCFJSCDpb6xi2lQB32wR9wxMfBjXFJFMjnagBDBKuYjeHdI/fAUJzrGByfjcbLt:wFdDkxA8aX27ZDEuiQwfYLt

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/1720-12-0x0000000000400000-0x0000000000444000-memory.dmp	family_cycbot
behavioral2/memory/2296-13-0x0000000000400000-0x0000000000444000-memory.dmp	family_cycbot
behavioral2/memory/4680-77-0x0000000000400000-0x0000000000444000-memory.dmp	family_cycbot
behavioral2/memory/2296-146-0x0000000000400000-0x0000000000444000-memory.dmp	family_cycbot
behavioral2/memory/2296-194-0x0000000000400000-0x0000000000444000-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"	JaffaCakes118_8b1a87bb29a899a517111137b23e62cb.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2296-2-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral2/memory/1720-12-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral2/memory/2296-13-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral2/memory/4680-75-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral2/memory/4680-77-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral2/memory/2296-146-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral2/memory/2296-194-0x0000000000400000-0x0000000000444000-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	JaffaCakes118_8b1a87bb29a899a517111137b23e62cb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_8b1a87bb29a899a517111137b23e62cb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_8b1a87bb29a899a517111137b23e62cb.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2296 wrote to memory of 1720	2296	JaffaCakes118_8b1a87bb29a899a517111137b23e62cb.exe	83
PID 2296 wrote to memory of 1720	2296	JaffaCakes118_8b1a87bb29a899a517111137b23e62cb.exe	83
PID 2296 wrote to memory of 1720	2296	JaffaCakes118_8b1a87bb29a899a517111137b23e62cb.exe	83
PID 2296 wrote to memory of 4680	2296	JaffaCakes118_8b1a87bb29a899a517111137b23e62cb.exe	97
PID 2296 wrote to memory of 4680	2296	JaffaCakes118_8b1a87bb29a899a517111137b23e62cb.exe	97
PID 2296 wrote to memory of 4680	2296	JaffaCakes118_8b1a87bb29a899a517111137b23e62cb.exe	97

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8b1a87bb29a899a517111137b23e62cb.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8b1a87bb29a899a517111137b23e62cb.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2296
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8b1a87bb29a899a517111137b23e62cb.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8b1a87bb29a899a517111137b23e62cb.exe startC:\Users\Admin\AppData\Roaming\dwm.exe%C:\Users\Admin\AppData\Roaming
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1720
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8b1a87bb29a899a517111137b23e62cb.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8b1a87bb29a899a517111137b23e62cb.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4680

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\4A14.74A

Filesize
600B

MD5
a6be3722c2b883e5d7eabf6fa8774fed

SHA1
e823d3276d0cb8dd3dfb2c56298cd1a1b4b9cda5

SHA256
0825515c44b6abb8861c0bce0b0599790875ef554e1baa3f550cefb610cc81cb

SHA512
09b81443f9fab6ca9100d10035fa1c7c8966eb97bac870fc8b97017789e66c42d7e2bfcda601e2232dd83fd194a36582c9350338dc9c8db81b956ff6579b17f2

Download Submit
C:\Users\Admin\AppData\Roaming\4A14.74A

Filesize
1KB

MD5
87b88adbe1a98a8d2578f4072fdba8cd

SHA1
3fb40c03a5e0095d595e39d4d710a03fcfe376b5

SHA256
6434121b507543dfc56a36e9c1de6a75129eed5b703fdda7dd0d4ba72912fe3e

SHA512
f316c74daec5bc6c1af806972fb256a61138584fb29986e8141f3cc9672e31eb635a71dba78dea279c1b7021df4245844d6ac9e500847aaedd44c858e048d669

Download Submit
C:\Users\Admin\AppData\Roaming\4A14.74A

Filesize
996B

MD5
b5911d9193268b8ee868c4c1d2b8b832

SHA1
e2db5a421f4a4104fd170666732fe4a0d720eec5

SHA256
474cc466244735327c14c46004ca4ded0b0e010593e4611a9702d8118615d2a7

SHA512
b28e80c5a3570ea5f2b3ad0ecf609fbcbe6b7b67c8cc917c0e7dd76efab9e3cd87773a7c4d9cec2bd297d0b47d667bb6f4d6e308694524d806233161a3d50c19

Download Submit
memory/1720-12-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2296-1-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2296-2-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2296-13-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2296-146-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2296-194-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/4680-74-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/4680-75-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/4680-77-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads