cycbot | ff59fd39f343ff759158ea1edd02ba2a068ecf0b5a458813c6cd581c239e17c0

General

Target

JaffaCakes118_68eb8aae37c33d27b7736657ce62e960.exe
Size

169KB
MD5

68eb8aae37c33d27b7736657ce62e960
SHA1

d25336493fa499b08f876a3152248d5323fa4ec3
SHA256

ff59fd39f343ff759158ea1edd02ba2a068ecf0b5a458813c6cd581c239e17c0
SHA512

141378a593d771e8a0056d32249c1eccca7b54c0a4ad8c158ee1f8069d01609375bef90ae4b67b2f6057fa53ba38c97c3180b548346179233a2e35b8c26337b0
SSDEEP

3072:yDVJI8SxZxU+b2EhfhfI8PTjYZ12Ze2ueo8CdQ6cuDI+WR+W2aXroUMKp+iGKpM:yDnIJZxU+hhfhA8PoZGueZC3D279MKtZ

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/1112-14-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/4600-15-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/4600-16-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/2692-81-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/4600-82-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/4600-186-0x0000000000400000-0x0000000000491000-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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\5BF1C\\447F0.exe"	JaffaCakes118_68eb8aae37c33d27b7736657ce62e960.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4600-2-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/1112-13-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/1112-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4600-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4600-16-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/2692-81-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4600-82-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4600-186-0x0000000000400000-0x0000000000491000-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	JaffaCakes118_68eb8aae37c33d27b7736657ce62e960.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_68eb8aae37c33d27b7736657ce62e960.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_68eb8aae37c33d27b7736657ce62e960.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4600 wrote to memory of 1112	4600	JaffaCakes118_68eb8aae37c33d27b7736657ce62e960.exe	84
PID 4600 wrote to memory of 1112	4600	JaffaCakes118_68eb8aae37c33d27b7736657ce62e960.exe	84
PID 4600 wrote to memory of 1112	4600	JaffaCakes118_68eb8aae37c33d27b7736657ce62e960.exe	84
PID 4600 wrote to memory of 2692	4600	JaffaCakes118_68eb8aae37c33d27b7736657ce62e960.exe	96
PID 4600 wrote to memory of 2692	4600	JaffaCakes118_68eb8aae37c33d27b7736657ce62e960.exe	96
PID 4600 wrote to memory of 2692	4600	JaffaCakes118_68eb8aae37c33d27b7736657ce62e960.exe	96

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_68eb8aae37c33d27b7736657ce62e960.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_68eb8aae37c33d27b7736657ce62e960.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4600
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_68eb8aae37c33d27b7736657ce62e960.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_68eb8aae37c33d27b7736657ce62e960.exe startC:\Program Files (x86)\LP\F0B5\5FB.exe%C:\Program Files (x86)\LP\F0B5
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1112
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_68eb8aae37c33d27b7736657ce62e960.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_68eb8aae37c33d27b7736657ce62e960.exe startC:\Program Files (x86)\1C5B5\lvvm.exe%C:\Program Files (x86)\1C5B5
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2692

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\5BF1C\C5B5.BF1

Filesize
1KB

MD5
15d339066eed5129a3acef8191c7c32e

SHA1
a37f26d70c2639691596d75b14a6d7608be0b50c

SHA256
12a7c75a8a8ede9a3f91da23606e4d0994c7f8639f240dded4411ea290adfaf1

SHA512
223071c26dc17a70f7dd943870002685355b83aa6031245dfd46a5285249a0634256d3a2dfc200846377559c71faa3992af44815e294aec65365d38c7a134bf0

Download Submit
C:\Users\Admin\AppData\Roaming\5BF1C\C5B5.BF1

Filesize
600B

MD5
1f75d558d1c23ccc5adc6804657e8512

SHA1
ab55eabfb4a4f3b0ee208e6b6b92d4aeb17cd26a

SHA256
b1581c433453d47f19b282dbb74ddaeab7cee995363facb1f5d692f2b4270c56

SHA512
00b312f1d834435f97898e4f7a4b61a8a0b9bb5b9f8d92b96dec8f3446ff827a02249cfaf5369a5982a8f387f826ac1317bae69ed0af225a14450faef1f2430f

Download Submit
C:\Users\Admin\AppData\Roaming\5BF1C\C5B5.BF1

Filesize
996B

MD5
44878f8d09bac88bb3807e3ad3bd56cf

SHA1
ebbe9d9724c7435a11a6f8d689df15d464c41981

SHA256
69364adb7099de9631067da4382d6cdde4c546cefe547ec1fc0b3d7a784f87d2

SHA512
ee708b51beaa58920fede6542dd3218e002d536f9f942e5e6d096ed6ac2880fe11f14ff858dbf07c70b6ebae36a428ccf5a0bd5f4f6a3e076b4a275f13ed802a

Download Submit
memory/1112-12-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1112-13-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1112-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2692-81-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4600-16-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/4600-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/4600-82-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4600-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4600-2-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4600-186-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads