cycbot | 55bbda7ef8ccf36366b2027dd53d3ab25d97b10845fe601f23bf6fcdf50de30e

General

Target

f9961644f774dd9b2533bb4fcd356ce7_JaffaCakes118.exe
Size

168KB
MD5

f9961644f774dd9b2533bb4fcd356ce7
SHA1

2091a1d49fa2e570e78d4dcb1680d05348ba9d3d
SHA256

55bbda7ef8ccf36366b2027dd53d3ab25d97b10845fe601f23bf6fcdf50de30e
SHA512

d7bdaa2feff2b2602dd0801b5545962edcbcab60c329b00dec00d7118c6d0b21a4fe4dcc3398b6c6db7e7ac6e3a72e6645b99f7b0e7edb43ab405e93cdfd20d7
SSDEEP

3072:cQskWUn3Ozry+KoRXckWQlHMoQEn9yzXZzZiHRUhog2T+wtYouP3oh:cxpUn393ouQlgVzAH2+TuouP3o

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 6 IoCs

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

resource	yara_rule
behavioral2/memory/756-14-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/1608-15-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/1608-16-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/4836-127-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/1608-128-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/1608-290-0x0000000000400000-0x0000000000491000-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-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\763FB\\932DF.exe"	f9961644f774dd9b2533bb4fcd356ce7_JaffaCakes118.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1608-2-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/756-13-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/756-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/1608-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/1608-16-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/4836-127-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4836-125-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/1608-128-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/1608-290-0x0000000000400000-0x0000000000491000-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	f9961644f774dd9b2533bb4fcd356ce7_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f9961644f774dd9b2533bb4fcd356ce7_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f9961644f774dd9b2533bb4fcd356ce7_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1608 wrote to memory of 756	1608	f9961644f774dd9b2533bb4fcd356ce7_JaffaCakes118.exe	82
PID 1608 wrote to memory of 756	1608	f9961644f774dd9b2533bb4fcd356ce7_JaffaCakes118.exe	82
PID 1608 wrote to memory of 756	1608	f9961644f774dd9b2533bb4fcd356ce7_JaffaCakes118.exe	82
PID 1608 wrote to memory of 4836	1608	f9961644f774dd9b2533bb4fcd356ce7_JaffaCakes118.exe	87
PID 1608 wrote to memory of 4836	1608	f9961644f774dd9b2533bb4fcd356ce7_JaffaCakes118.exe	87
PID 1608 wrote to memory of 4836	1608	f9961644f774dd9b2533bb4fcd356ce7_JaffaCakes118.exe	87

C:\Users\Admin\AppData\Local\Temp\f9961644f774dd9b2533bb4fcd356ce7_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f9961644f774dd9b2533bb4fcd356ce7_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1608
- C:\Users\Admin\AppData\Local\Temp\f9961644f774dd9b2533bb4fcd356ce7_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\f9961644f774dd9b2533bb4fcd356ce7_JaffaCakes118.exe startC:\Program Files (x86)\LP\DF67\5CE.exe%C:\Program Files (x86)\LP\DF67
  2⤵
  - System Location Discovery: System Language Discovery
  PID:756
- C:\Users\Admin\AppData\Local\Temp\f9961644f774dd9b2533bb4fcd356ce7_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\f9961644f774dd9b2533bb4fcd356ce7_JaffaCakes118.exe startC:\Program Files (x86)\FBB53\lvvm.exe%C:\Program Files (x86)\FBB53
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4836

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\763FB\BB53.63F

Filesize
996B

MD5
7ea2ed658b2db9cce81f5ffb79923006

SHA1
470304c38e50c1164650178f7b97c8c66c605db6

SHA256
aac55ae0335cc8dcda031cc82096380089b6721483e92c5c83295b1b024eeab1

SHA512
4c8d20eef80f519141cca3198caa54bfcc66e0c86ffd1b6ccb46c48d10db8b3b3ab782d98e81d1841682b06d751d615b2409c3565eea82ef7fd2126ef1ec006c

Download Submit
C:\Users\Admin\AppData\Roaming\763FB\BB53.63F

Filesize
1KB

MD5
81e026e7fb9c55248f851ce546ccdcfd

SHA1
94cd2cc6f48acdb539ff06eea312218b0132a091

SHA256
3b87b9a0b371360404593aa972d83fbc4f0a4484b1898442bc9901ac4c731643

SHA512
99a9c8b8e4baf9ddd8500d93a0db031da3c424643f882fc71c10a7b6006867aa211f7037da723b4d651e82367bd4a8980e3e625cace8512c3921d04efea6cf9f

Download Submit
C:\Users\Admin\AppData\Roaming\763FB\BB53.63F

Filesize
600B

MD5
eec24641cfd68b9bee157b7a2b43cdab

SHA1
a6c999073a1e8cc9d55e23b95b85b60c232fc8e9

SHA256
1c8d67efb67e1895728a29e750699c6ec99458f791abcb7ccdedc2f4f8c63196

SHA512
d0e6badd4c43372e13701ff73803af9fb6da21492b75cde25e29ccc12bf42b816a6540cc2954e390d0118db17ad83f115475db43994f3a8673b75534b99013d1

Download Submit
memory/756-12-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/756-13-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/756-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1608-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1608-16-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1608-128-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1608-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1608-2-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1608-290-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4836-127-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4836-125-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads