cycbot | d35a9255de0cf04833f12fec3d709792f49bb9f18229a8b42183e035b9d80896

General

Target

f19347ed79cb7aa5ef62fc86e258ce4a_JaffaCakes118.exe
Size

184KB
MD5

f19347ed79cb7aa5ef62fc86e258ce4a
SHA1

60d1044da8df4b8f5207eaad7a9a0f2aa7c6bed3
SHA256

d35a9255de0cf04833f12fec3d709792f49bb9f18229a8b42183e035b9d80896
SHA512

7117a22f11baa63ba0311e70402b7cbba4b9814f99840f62f4dfeb38d7ebda41278f0ceffafba1dcdfa3d46f6f99780ba37cb1a3fd5fa8a069d17f6922e9b223
SSDEEP

3072:6b8GZwHMnOJsrDLsvsWqmno1PHA1qu7fqyB6PID/p5UkgvmODt:6bTKsng8XsDo1PHAgu7fKQp53gvv

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/3104-9-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/1656-15-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/2908-86-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/1656-87-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/1656-189-0x0000000000400000-0x000000000048E000-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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	f19347ed79cb7aa5ef62fc86e258ce4a_JaffaCakes118.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1656-2-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/3104-8-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/3104-9-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/1656-15-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/2908-86-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/1656-87-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/1656-189-0x0000000000400000-0x000000000048E000-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	f19347ed79cb7aa5ef62fc86e258ce4a_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f19347ed79cb7aa5ef62fc86e258ce4a_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f19347ed79cb7aa5ef62fc86e258ce4a_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1656 wrote to memory of 3104	1656	f19347ed79cb7aa5ef62fc86e258ce4a_JaffaCakes118.exe	81
PID 1656 wrote to memory of 3104	1656	f19347ed79cb7aa5ef62fc86e258ce4a_JaffaCakes118.exe	81
PID 1656 wrote to memory of 3104	1656	f19347ed79cb7aa5ef62fc86e258ce4a_JaffaCakes118.exe	81
PID 1656 wrote to memory of 2908	1656	f19347ed79cb7aa5ef62fc86e258ce4a_JaffaCakes118.exe	83
PID 1656 wrote to memory of 2908	1656	f19347ed79cb7aa5ef62fc86e258ce4a_JaffaCakes118.exe	83
PID 1656 wrote to memory of 2908	1656	f19347ed79cb7aa5ef62fc86e258ce4a_JaffaCakes118.exe	83

C:\Users\Admin\AppData\Local\Temp\f19347ed79cb7aa5ef62fc86e258ce4a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f19347ed79cb7aa5ef62fc86e258ce4a_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1656
- C:\Users\Admin\AppData\Local\Temp\f19347ed79cb7aa5ef62fc86e258ce4a_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\f19347ed79cb7aa5ef62fc86e258ce4a_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3104
- C:\Users\Admin\AppData\Local\Temp\f19347ed79cb7aa5ef62fc86e258ce4a_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\f19347ed79cb7aa5ef62fc86e258ce4a_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2908

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

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\Roaming\5E02.BF7

Filesize
1KB

MD5
97a2ead7994d59a818269896301f4986

SHA1
c32b2f4fbb3e762e6901e2c631912baa26b50ebb

SHA256
f37d9853ed2e309b2565b3a06f0158145e1345f30cb61fe6c9165a14aaa78ade

SHA512
eeb937d73f44b82e75f07adfbbd8238be699f2266daf34380c80b4e42114ee43264bc2ee6cba18654f972a31a0e97fb6f93329fad73db0af477d1315e6547e03

Download Submit
C:\Users\Admin\AppData\Roaming\5E02.BF7

Filesize
600B

MD5
c0bdfad22a062201d18b3568290c71e5

SHA1
0a29de4d92ed43d99ad97344bc873d5a86507b48

SHA256
7a359c2482da1a713b068917b6d9b57af752ff4f7f749938b6621a5b10fb9480

SHA512
a49be9e8150a7a087b4e4112819db2e8c7a3e8c327db7b88b839c4e74f8e713bfddb1f0e6f20e520b3c10b0018d654ac86737753a37febb7bc6bf937611c439e

Download Submit
C:\Users\Admin\AppData\Roaming\5E02.BF7

Filesize
996B

MD5
231ad37961041f27a6433dbca79768dd

SHA1
5d2b187854b26ce241c3ded4ca9df9e829e42199

SHA256
4df6238b8fdf144694b55695443d65593c9a8018008caadec4b8e5788de43298

SHA512
845f0cc16647c22c24be9be9eb6ce48bbb0587d71ffaea129556c4bedf7e254a692ccdde010fd4475f73768c9a4c8675377f22b8043c90deb95056c4154c07de

Download Submit
memory/1656-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1656-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1656-15-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1656-87-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1656-189-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2908-84-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2908-86-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/3104-8-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/3104-9-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads