cycbot | b959a44137466a19ed109945596d9becc38d2925fb63b4305c9d6b432d1903d8

General

Target

fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe
Size

174KB
MD5

fba9a2cc10862e1c11054af84427f403
SHA1

44ec7c5ae23ee951227317405ee56fc9318d29bb
SHA256

b959a44137466a19ed109945596d9becc38d2925fb63b4305c9d6b432d1903d8
SHA512

cf2cd3a9195986a231f228ebadeea5ddb6d08d7ffd0c24034e5d3944294b4ef9db0dc5841450dcd34216e201a13ba57753c3753dab8876e121d4c4470e881c26
SSDEEP

3072:1OuRxqAK87oRXr7qk5M29raOXCA/XtoG3o0nW/t0GGV2II/T:1XqAX7eXr7q2FaOXCaXaB1/82

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/4948-13-0x0000000000400000-0x000000000044B000-memory.dmp	family_cycbot
behavioral2/memory/560-14-0x0000000000400000-0x000000000044B000-memory.dmp	family_cycbot
behavioral2/memory/560-71-0x0000000000400000-0x000000000044B000-memory.dmp	family_cycbot
behavioral2/memory/5112-73-0x0000000000400000-0x000000000044B000-memory.dmp	family_cycbot
behavioral2/memory/560-176-0x0000000000400000-0x000000000044B000-memory.dmp	family_cycbot

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\conhost = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\conhost.exe"	fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/560-2-0x0000000000400000-0x000000000044B000-memory.dmp	upx
behavioral2/memory/4948-12-0x0000000000400000-0x000000000044B000-memory.dmp	upx
behavioral2/memory/4948-13-0x0000000000400000-0x000000000044B000-memory.dmp	upx
behavioral2/memory/560-14-0x0000000000400000-0x000000000044B000-memory.dmp	upx
behavioral2/memory/560-71-0x0000000000400000-0x000000000044B000-memory.dmp	upx
behavioral2/memory/5112-73-0x0000000000400000-0x000000000044B000-memory.dmp	upx
behavioral2/memory/560-176-0x0000000000400000-0x000000000044B000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 1 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	fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 560 wrote to memory of 4948	560	fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe	84
PID 560 wrote to memory of 4948	560	fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe	84
PID 560 wrote to memory of 4948	560	fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe	84
PID 560 wrote to memory of 5112	560	fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe	90
PID 560 wrote to memory of 5112	560	fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe	90
PID 560 wrote to memory of 5112	560	fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe	90

C:\Users\Admin\AppData\Local\Temp\fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:560
- C:\Users\Admin\AppData\Local\Temp\fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\dwm.exe%C:\Users\Admin\AppData\Roaming
  2⤵
  PID:4948
- C:\Users\Admin\AppData\Local\Temp\fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  PID:5112

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\C41A.F63

Filesize
1KB

MD5
cdc92e13c64b886bf83640941a0d944e

SHA1
5a9f84e65f2893209b24d53ae9282cb6dc57bcda

SHA256
1ac6d6d15209513757614c9cab7b8e2117967d2acab978b364cde7e3b46c3f16

SHA512
a3881eca3216f6b76ac99e066840e23031005f47cfec0d949fbd695a62258e5c8c87e5f7ee4cccc8e5eea0a2ce3bb89c966546cd4ec0cc3d351df43d8f5e1eff

Download Submit
C:\Users\Admin\AppData\Roaming\C41A.F63

Filesize
600B

MD5
67b83775e9e5d8efadb78c9ee1e02f71

SHA1
50631a26f64d5614dca6227afe44da1797f0e947

SHA256
de4774e9b992103913fe40cfb500f53702d8358dabfb88103421473a1233f0e8

SHA512
b6ce1923fa9c074c3acdc4563c1a636e750eeaaff38a886c38ac5547844c294be19092fed0e95d24d9d5ae38dc979ff9467ef91ce7d6b5381170d870c6444460

Download Submit
C:\Users\Admin\AppData\Roaming\C41A.F63

Filesize
996B

MD5
432e1e042c8874e42cf7252c350ee274

SHA1
5ea0b9beb91327436a2c70f4f4d9eaa83d11469c

SHA256
661990f86cc81dc4840505797502360acdaf924539a99fa286bf6594027b1f83

SHA512
e5e2388d0a50f5f9e234c6ff01d81c1a2a2b4173186d838224299a1c68b7c33f3b4248d378c3550796df7a14a598ae8ce152e8c6a3bf7089df734894b5dabd86

Download Submit
memory/560-2-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/560-1-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/560-14-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/560-71-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/560-176-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/4948-12-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/4948-13-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/5112-73-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads