cycbot | 0c0201e33e161a77753e637bc1301bf2063d7dbbc4c74c5d01b91c9cf6a3a80a

General

Target

JaffaCakes118_08d536f2e8d9e66214fa54a0c25756b1.exe
Size

187KB
MD5

08d536f2e8d9e66214fa54a0c25756b1
SHA1

fa762d4cd8985eda09b3b0897f77ac8c9da89acc
SHA256

0c0201e33e161a77753e637bc1301bf2063d7dbbc4c74c5d01b91c9cf6a3a80a
SHA512

4554941219cd4aa95ce2330ff184acfc7cc4cd817406a1807004c822a456fb8d667cafcc5127ed3c93eb3eaa4cbd49390a8ccb6e732bde9072e4059c70653abb
SSDEEP

3072:LjZLWSP1wFBJFWDauNKHls+4iXR41Sw7HG6gOqz4ew33hfXHQOCRHOvUpBm5:nZd1wFxWDauNiX4v9iOqlwHdHuRuvUp

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 5 IoCs

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

resource	yara_rule
behavioral1/memory/2072-6-0x0000000000400000-0x0000000000468000-memory.dmp	family_cycbot
behavioral1/memory/3052-14-0x0000000000400000-0x0000000000468000-memory.dmp	family_cycbot
behavioral1/memory/1268-75-0x0000000000400000-0x0000000000468000-memory.dmp	family_cycbot
behavioral1/memory/3052-76-0x0000000000400000-0x0000000000468000-memory.dmp	family_cycbot
behavioral1/memory/3052-172-0x0000000000400000-0x0000000000468000-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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_08d536f2e8d9e66214fa54a0c25756b1.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 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3052-2-0x0000000000400000-0x0000000000468000-memory.dmp	upx
behavioral1/memory/2072-6-0x0000000000400000-0x0000000000468000-memory.dmp	upx
behavioral1/memory/3052-14-0x0000000000400000-0x0000000000468000-memory.dmp	upx
behavioral1/memory/1268-75-0x0000000000400000-0x0000000000468000-memory.dmp	upx
behavioral1/memory/3052-76-0x0000000000400000-0x0000000000468000-memory.dmp	upx
behavioral1/memory/3052-172-0x0000000000400000-0x0000000000468000-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_08d536f2e8d9e66214fa54a0c25756b1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_08d536f2e8d9e66214fa54a0c25756b1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_08d536f2e8d9e66214fa54a0c25756b1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3052 wrote to memory of 2072	3052	JaffaCakes118_08d536f2e8d9e66214fa54a0c25756b1.exe	30
PID 3052 wrote to memory of 2072	3052	JaffaCakes118_08d536f2e8d9e66214fa54a0c25756b1.exe	30
PID 3052 wrote to memory of 2072	3052	JaffaCakes118_08d536f2e8d9e66214fa54a0c25756b1.exe	30
PID 3052 wrote to memory of 2072	3052	JaffaCakes118_08d536f2e8d9e66214fa54a0c25756b1.exe	30
PID 3052 wrote to memory of 1268	3052	JaffaCakes118_08d536f2e8d9e66214fa54a0c25756b1.exe	32
PID 3052 wrote to memory of 1268	3052	JaffaCakes118_08d536f2e8d9e66214fa54a0c25756b1.exe	32
PID 3052 wrote to memory of 1268	3052	JaffaCakes118_08d536f2e8d9e66214fa54a0c25756b1.exe	32
PID 3052 wrote to memory of 1268	3052	JaffaCakes118_08d536f2e8d9e66214fa54a0c25756b1.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_08d536f2e8d9e66214fa54a0c25756b1.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_08d536f2e8d9e66214fa54a0c25756b1.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3052
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_08d536f2e8d9e66214fa54a0c25756b1.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_08d536f2e8d9e66214fa54a0c25756b1.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2072
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_08d536f2e8d9e66214fa54a0c25756b1.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_08d536f2e8d9e66214fa54a0c25756b1.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1268

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\20CF.77D

Filesize
1KB

MD5
ed164691b8a3f7bf9b5dea5066ef8f14

SHA1
848c98e496409da6050251e9773d494e8270d90f

SHA256
38fa790afe7ae7f0d4fe12498e37dda86dbbd12b967de07e0fd90be843f9f3f0

SHA512
158eda72270ca53a18b7847cb8f2d6df3dbcc53071f1d7faaec2f0d6b9c311e268f4934fd36a019ca55d4b6fba1852faf0e661a8420582bb82c038384c8e9100

Download Submit
C:\Users\Admin\AppData\Roaming\20CF.77D

Filesize
600B

MD5
ae02aaea8fa06502e518e8ae8257fafd

SHA1
8c8422313611d5cab6a441eaf7bc1cdbb6d62be6

SHA256
aa372525e8c56c43674957f5701370e9a75ead210dc660180601f5e1df7609df

SHA512
bbfd8a5441e47dba93e5a976c30098a65a500a5594e9b4e82a9e1bfb86f8a6a154c3a8549f756add9a4abca30ce5e9a1dd79fd6bc1ec4a9f57de0e92a8d4e220

Download Submit
C:\Users\Admin\AppData\Roaming\20CF.77D

Filesize
996B

MD5
12dc67f6ea5e96c624030e9045bb4fb8

SHA1
a67b5cd7885824ee80b405f71c7d552d92cadc8c

SHA256
31a1f903532d1bcb2df2641e8add66767f1535e1a29bbf0c65bf0d263f07bf11

SHA512
3c7a818914e0e4fff4e2d49536e03f9048fd0b99ebef9bbf7135597d6e894b34bd61d94a5cf7eede6ad15e45b313f78c401a5c61ed2746f5bfe04dc1ad93b2dd

Download Submit
memory/1268-73-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/1268-75-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/2072-5-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/2072-6-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/3052-1-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/3052-2-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/3052-14-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/3052-76-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/3052-172-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads