cycbot | bb592e71f9723732693985f74eaf4c3b3afc289e2c623087cdd6791108659a4f

General

Target

eea249bcdd0d2acf69655bc5adb1fc13_JaffaCakes118.exe
Size

173KB
MD5

eea249bcdd0d2acf69655bc5adb1fc13
SHA1

bb81179acc434a470b10c8d7e19765c60176f66c
SHA256

bb592e71f9723732693985f74eaf4c3b3afc289e2c623087cdd6791108659a4f
SHA512

182678e55715172bd22f08d245fafa53f202a40203bf220c9d0ee54feaa9b4a6f131193e124131900cfd97ce4c8dfa94efe8a6ede727737dd1421054bd33cf19
SSDEEP

3072:NeMmkP7JvG7877LfMedWxqDtIbGqqT/MJZkjadWmZn3pjuj8AjHS75rpxB:5dGjuWTGqqT/IXd5R5ju4AI

Score

10^/10

cycbot backdoor discovery persistence rat spyware stealer upx

Malware Config

Signatures

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

Detects Cycbot payload 6 IoCs

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

resource	yara_rule
behavioral1/memory/2224-15-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2224-13-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2024-16-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2024-71-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2984-75-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2024-183-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	eea249bcdd0d2acf69655bc5adb1fc13_JaffaCakes118.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2024-2-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2224-12-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2224-15-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2224-13-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2024-16-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2024-71-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2984-73-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2984-75-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2024-183-0x0000000000400000-0x000000000048D000-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	eea249bcdd0d2acf69655bc5adb1fc13_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eea249bcdd0d2acf69655bc5adb1fc13_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eea249bcdd0d2acf69655bc5adb1fc13_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2024 wrote to memory of 2224	2024	eea249bcdd0d2acf69655bc5adb1fc13_JaffaCakes118.exe	31
PID 2024 wrote to memory of 2224	2024	eea249bcdd0d2acf69655bc5adb1fc13_JaffaCakes118.exe	31
PID 2024 wrote to memory of 2224	2024	eea249bcdd0d2acf69655bc5adb1fc13_JaffaCakes118.exe	31
PID 2024 wrote to memory of 2224	2024	eea249bcdd0d2acf69655bc5adb1fc13_JaffaCakes118.exe	31
PID 2024 wrote to memory of 2984	2024	eea249bcdd0d2acf69655bc5adb1fc13_JaffaCakes118.exe	33
PID 2024 wrote to memory of 2984	2024	eea249bcdd0d2acf69655bc5adb1fc13_JaffaCakes118.exe	33
PID 2024 wrote to memory of 2984	2024	eea249bcdd0d2acf69655bc5adb1fc13_JaffaCakes118.exe	33
PID 2024 wrote to memory of 2984	2024	eea249bcdd0d2acf69655bc5adb1fc13_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\eea249bcdd0d2acf69655bc5adb1fc13_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\eea249bcdd0d2acf69655bc5adb1fc13_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2024
- C:\Users\Admin\AppData\Local\Temp\eea249bcdd0d2acf69655bc5adb1fc13_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\eea249bcdd0d2acf69655bc5adb1fc13_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2224
- C:\Users\Admin\AppData\Local\Temp\eea249bcdd0d2acf69655bc5adb1fc13_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\eea249bcdd0d2acf69655bc5adb1fc13_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2984

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\F298.6DA

Filesize
1KB

MD5
6a4ee9077166d38381d17062f1a184d9

SHA1
06e8da4303d66de8b0baad10a2cec642d525991d

SHA256
b3e7e110d856f14ef900e7f599149d7a0fb071499e12fb17e9ee5781503a5b26

SHA512
49eb54c374130c9d14eee70393542187cb6fac324e0f0d054c8fa86afa557bb6e79ecd46367caf9952fc46bf2a44d986175cb82d08b223ddf36693c3e18d932f

Download Submit
C:\Users\Admin\AppData\Roaming\F298.6DA

Filesize
600B

MD5
e937681863a9e430a43b6dd5268fd15e

SHA1
7d81f1f8cad4fded68fbd25426bf9e378d3e9779

SHA256
1f5275ddba2c8a273cc19baa78a374dd20f7b2b4a0a7fb0037777a3d7188f9c7

SHA512
04df5f91aea5965ac195832e132b3ba1b61daa248c0a83de1dc6eb8052227db2690c91b5ebaa6cde57a3a1114f0df6b1c450518c0dfca7f12be77996e4fdf350

Download Submit
C:\Users\Admin\AppData\Roaming\F298.6DA

Filesize
996B

MD5
f4900f2a8522d08e6acfd01217e42f37

SHA1
2d5333663d34248b03fafaa99a9190502d614dfc

SHA256
c3793a1975b5298a7cac3589fdbe6f1b9baea5f412d7c04bab36abc92875abea

SHA512
6a779f63d2fef80003960fef3a7a8f67368d595a52ceb9cbfd4b2ef95ed5dc2fb61c6dd37a2c386342c56dcead807d3615e9a26b5f15914b76a005769e8edece

Download Submit
memory/2024-2-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2024-183-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2024-1-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2024-16-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2024-71-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2224-15-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2224-13-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2224-12-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2984-75-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2984-73-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads