cycbot | 9c89c1a5596887f391929ce660ef198b71a1264e30f7d01aaa1475186ca84339

General

Target

JaffaCakes118_9d24b0e4f95511844a4d60d2947dd6e1.exe
Size

166KB
MD5

9d24b0e4f95511844a4d60d2947dd6e1
SHA1

862ec33ddac6af87d9a71ea162a842c80313e019
SHA256

9c89c1a5596887f391929ce660ef198b71a1264e30f7d01aaa1475186ca84339
SHA512

92d4ba56dd4e2ec21c7c5eea38c3d55de863b1aead60cbab97de1f62b1dea982d18698ed976ebc22dc3db583d579c1238a5794a4b46959ed14db7dda8e65c825
SSDEEP

3072:JoXMttz7nAe9Tn18W4jJk1Gk8+OAn9GdzqwwmwpS2bWpLu9V2DO2z7UNdY9oXDAO:Jo8tVjAeXRx1o+j9GdyS/YQDO2zP9oXV

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 7 IoCs

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

resource	yara_rule
behavioral1/memory/2884-7-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2884-8-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/1732-16-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/1732-80-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2072-85-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/1732-154-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/1732-195-0x0000000000400000-0x000000000048A000-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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_9d24b0e4f95511844a4d60d2947dd6e1.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 10 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1732-2-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2884-7-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2884-8-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2884-5-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/1732-16-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/1732-80-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2072-85-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2072-83-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/1732-154-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/1732-195-0x0000000000400000-0x000000000048A000-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_9d24b0e4f95511844a4d60d2947dd6e1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_9d24b0e4f95511844a4d60d2947dd6e1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_9d24b0e4f95511844a4d60d2947dd6e1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1732 wrote to memory of 2884	1732	JaffaCakes118_9d24b0e4f95511844a4d60d2947dd6e1.exe	30
PID 1732 wrote to memory of 2884	1732	JaffaCakes118_9d24b0e4f95511844a4d60d2947dd6e1.exe	30
PID 1732 wrote to memory of 2884	1732	JaffaCakes118_9d24b0e4f95511844a4d60d2947dd6e1.exe	30
PID 1732 wrote to memory of 2884	1732	JaffaCakes118_9d24b0e4f95511844a4d60d2947dd6e1.exe	30
PID 1732 wrote to memory of 2072	1732	JaffaCakes118_9d24b0e4f95511844a4d60d2947dd6e1.exe	32
PID 1732 wrote to memory of 2072	1732	JaffaCakes118_9d24b0e4f95511844a4d60d2947dd6e1.exe	32
PID 1732 wrote to memory of 2072	1732	JaffaCakes118_9d24b0e4f95511844a4d60d2947dd6e1.exe	32
PID 1732 wrote to memory of 2072	1732	JaffaCakes118_9d24b0e4f95511844a4d60d2947dd6e1.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9d24b0e4f95511844a4d60d2947dd6e1.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9d24b0e4f95511844a4d60d2947dd6e1.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1732
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9d24b0e4f95511844a4d60d2947dd6e1.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9d24b0e4f95511844a4d60d2947dd6e1.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2884
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9d24b0e4f95511844a4d60d2947dd6e1.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9d24b0e4f95511844a4d60d2947dd6e1.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2072

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\553E.F30

Filesize
1KB

MD5
ecba4a2e67c14411f5aeac06a9b5bc40

SHA1
a3583a3c9ff4710c40a268c6829c11376e84da96

SHA256
e741c17d106a9a029dfd1ca005d6b22bac765a8125b07a9e28c28fb883c9bb20

SHA512
1495dab62a4430c2e8332aaf99e52fe9249b80f3e514bbe414a533c55cb8f71bb953d79ba2bc50f05247de52993f0b07b05d721897576838298b84511080f1d2

Download Submit
C:\Users\Admin\AppData\Roaming\553E.F30

Filesize
1KB

MD5
ad785691fc51e79cc60d5352d5181eb9

SHA1
2419d5968e1abb004d01ec4d78065ec7486b0e71

SHA256
b7d698b81addbd8f086d8283ef5f71d218aee53e769b53f4cbf65cb912f9c26f

SHA512
44e0562123f70fbcb5ed812cb24a47637e949516b123ac9767575c859f71be3f9101ea45ae65abbbc885a3b453b6d76043fc72e9b1928e8553d730d6d5e668ef

Download Submit
C:\Users\Admin\AppData\Roaming\553E.F30

Filesize
600B

MD5
422c42b17d6e7fbfb0acf505d5d0d72c

SHA1
cb85a4cc903fb9e636c80e46680da754383de6c2

SHA256
39362e73ba0a66c498c3beef2be4e621d92427975e279a4c3c32961d878627bb

SHA512
7687cc7b1e00a74d1a2e99a9508316fe92e7b2e1750451bf38e8be86a5ebd0d3579448f4347b3e1f48b97c505cfcb0804fee1e055de75e79933f908fa45a1fcb

Download Submit
C:\Users\Admin\AppData\Roaming\553E.F30

Filesize
996B

MD5
e61335234793841823a9b4f1e255dab4

SHA1
0754c4ab41e81ee94801b24a10cb51beb91b3129

SHA256
2d199a26ce330c094bb458abcd7195b54036ad6a8adf0e032433adaee825b403

SHA512
14461767f2b2dd25850720d481cb40a310f80e4c7b4141cc2c64a13eaaf8020e969188a2b348003d71034a470d3b58f2b270495a4b37597c8e944130fe92ee6a

Download Submit
memory/1732-2-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/1732-195-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/1732-154-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/1732-16-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/1732-80-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/1732-1-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2072-82-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2072-83-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2072-85-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2884-5-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2884-8-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2884-7-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads