cycbot | 18436fdba2f902818c3da3e6bf648860796eb08ca3e1690e44a426d69783ba9c

General

Target

JaffaCakes118_25ad4b2d733bceb409c94f35c6b48c72.exe
Size

182KB
MD5

25ad4b2d733bceb409c94f35c6b48c72
SHA1

1606ad922b658bf208670543b2661be3c478846e
SHA256

18436fdba2f902818c3da3e6bf648860796eb08ca3e1690e44a426d69783ba9c
SHA512

7dc3ff3d1051f7a5024748347d76cc832412fe2a59b85a57effc64a9eea289efe474117d44c2b2f3e22e2e78a873b1290fb27744ab75ad1616bd0ea33964b56c
SSDEEP

3072:Alo0bauokAb0msostHXjcWW5z1UlHcOsGkdC1itfpkSzPXHdm7:10baugWtHzVYO8OfGd8Y

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/2608-12-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/5032-13-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/5032-75-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/4952-77-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/5032-185-0x0000000000400000-0x0000000000490000-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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_25ad4b2d733bceb409c94f35c6b48c72.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5032-1-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/5032-2-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/2608-12-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/5032-13-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/5032-75-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/4952-77-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/5032-185-0x0000000000400000-0x0000000000490000-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_25ad4b2d733bceb409c94f35c6b48c72.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_25ad4b2d733bceb409c94f35c6b48c72.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_25ad4b2d733bceb409c94f35c6b48c72.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5032 wrote to memory of 2608	5032	JaffaCakes118_25ad4b2d733bceb409c94f35c6b48c72.exe	83
PID 5032 wrote to memory of 2608	5032	JaffaCakes118_25ad4b2d733bceb409c94f35c6b48c72.exe	83
PID 5032 wrote to memory of 2608	5032	JaffaCakes118_25ad4b2d733bceb409c94f35c6b48c72.exe	83
PID 5032 wrote to memory of 4952	5032	JaffaCakes118_25ad4b2d733bceb409c94f35c6b48c72.exe	93
PID 5032 wrote to memory of 4952	5032	JaffaCakes118_25ad4b2d733bceb409c94f35c6b48c72.exe	93
PID 5032 wrote to memory of 4952	5032	JaffaCakes118_25ad4b2d733bceb409c94f35c6b48c72.exe	93

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_25ad4b2d733bceb409c94f35c6b48c72.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_25ad4b2d733bceb409c94f35c6b48c72.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5032
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_25ad4b2d733bceb409c94f35c6b48c72.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_25ad4b2d733bceb409c94f35c6b48c72.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2608
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_25ad4b2d733bceb409c94f35c6b48c72.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_25ad4b2d733bceb409c94f35c6b48c72.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4952

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\17DC.A5E

Filesize
600B

MD5
1229492a2ada66ab4ae31b5ebe2f5d6e

SHA1
4960875acc7a5ce3cbebaef7096d67c20ffa9590

SHA256
4aaec3551438d0ca11173b4d56ce91ecdbe6a86f9335c32b3729e7717ff834f9

SHA512
d7a620e761ef51eac3926a10b54de3f8e1f035c021ef91b58755cbc29955a62b9914659b310166b08048bfda1d828f92e203a65192dbe64d3a5bddc49f6542c3

Download Submit
C:\Users\Admin\AppData\Roaming\17DC.A5E

Filesize
1KB

MD5
73304fec363d87c0c3521876337487f0

SHA1
d0ee757ea63d5382c63ff1d6b5c9a1585560b4eb

SHA256
b5934902fdecd51eef1d6cd8c4f4ae3c021997e41b6de5b63e5d151020ac93bf

SHA512
9ac1053165aa12fb90bd67bcad18b51801edf7a2304667b5f930c4623902ebd09a41de0f5bccf6241dfaee07833fd5af564667b614af810722d85caff73f58d9

Download Submit
C:\Users\Admin\AppData\Roaming\17DC.A5E

Filesize
996B

MD5
25622a7958012687c37cf9b200b95f52

SHA1
f14b91b52be60052a38417af89d821e09ff8430b

SHA256
faf57153d7ef68d85c94e85003aafc0f17a0322286edccaadf298402d4f44d0f

SHA512
a0b8fa5463b994db2d5214889e26da355072ff4674062b8885145aaf8f207d6c7414f560bc7bad74a0369a493fa0631846e2faf9f28ddf282d984d7c6e89c051

Download Submit
memory/2608-12-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/4952-77-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/5032-1-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/5032-2-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/5032-13-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/5032-75-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/5032-185-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads