cycbot | b5ebd1807c7ba566efa0aa67411e13dcc41a2474a5c210d915dadd9e34c31cce

General

Target

ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe
Size

186KB
MD5

ffb1758d5658f6b3158e3f547571f581
SHA1

7a0a5b3ca7725de8fea6a8b4fc3548acb92ae4b9
SHA256

b5ebd1807c7ba566efa0aa67411e13dcc41a2474a5c210d915dadd9e34c31cce
SHA512

d7172613b9cc9d61464e2eafbb04b6623cca4bae28d5557b95ad9a0ce910d4ab19f9c9a5f245edc805157e552a2a981e3299ab1ffcf193a12429adbd045e7b0b
SSDEEP

3072:vAhjPlxyPDatxM8NMW9jKIkV6kSSp91vorArlX3PyYgJcigrJBc4lj0g1jEW:vAhblxg2kZE7FSprvswaAiS/VljrE

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/2076-15-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral1/memory/3044-16-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral1/memory/3044-90-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral1/memory/2036-93-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral1/memory/2036-95-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral1/memory/3044-198-0x0000000000400000-0x000000000048C000-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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	ffb1758d5658f6b3158e3f547571f581_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/3044-2-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2076-12-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2076-13-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2076-15-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/3044-16-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/3044-90-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2036-93-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2036-95-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/3044-198-0x0000000000400000-0x000000000048C000-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	ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3044 wrote to memory of 2076	3044	ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe	30
PID 3044 wrote to memory of 2076	3044	ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe	30
PID 3044 wrote to memory of 2076	3044	ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe	30
PID 3044 wrote to memory of 2076	3044	ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe	30
PID 3044 wrote to memory of 2036	3044	ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe	33
PID 3044 wrote to memory of 2036	3044	ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe	33
PID 3044 wrote to memory of 2036	3044	ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe	33
PID 3044 wrote to memory of 2036	3044	ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Users\Admin\AppData\Local\Temp\ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2076
- C:\Users\Admin\AppData\Local\Temp\ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2036

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\9673.664

Filesize
1KB

MD5
d5135df53b19c1bbdb2639901343355c

SHA1
282959bb1d0a29ecabcbed94c3c447e7701ba59e

SHA256
547bba3e61cfe12802640d7872dff8ee9e25d30e7d2181747009311cfef2db10

SHA512
d69902d15f3208bacd9052b9430a98b474e913785a9a83943fb30c5d9f680528848e7e7f982788ccd7ebd14e96f7fdc65a68b47f43018b5ed08cb70ce499f46d

Download Submit
C:\Users\Admin\AppData\Roaming\9673.664

Filesize
600B

MD5
5b6a77d269d32ac1cdd966470e6ae5cc

SHA1
8ddfebe975b3a115764b2426614b5eb7fb596fbe

SHA256
94ff40ce29ffc601410fc0da5e741f0ea71e7753100c38d6b655038013f7eb25

SHA512
e916b8c180df2654210b9def5eac8bb166c67b31af726bffa06ce13af11c3e486301769862d1809debf7b5312620c0f94ac87245d43d122f1b2a8aabc11f8b04

Download Submit
memory/2036-93-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2036-92-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2036-95-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2076-13-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2076-15-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2076-12-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/3044-16-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/3044-90-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/3044-1-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/3044-2-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/3044-198-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads