cycbot | 239a9ba253899e7b2850d8a85580ad1702f74ab9c63e21cb8bce9cfa487c9ad1

General

Target

JaffaCakes118_402a247a67d38ddff6e5807b5156e541.exe
Size

183KB
MD5

402a247a67d38ddff6e5807b5156e541
SHA1

64d0df4d0da57678e65e7c6ce32c5900f68052ac
SHA256

239a9ba253899e7b2850d8a85580ad1702f74ab9c63e21cb8bce9cfa487c9ad1
SHA512

fbfc4c9b6a81a4cf440c8fb797e7ae8ceb0659ba1e6db10a5bdc377931aa42057314b6458e80e5f1b1fd4f864a4b3abf07818ab100250b1325353ccc949b2031
SSDEEP

3072:VJ0PLdHSf2yB7H5KpVHTF1aMNOTavgzxXzS/nCR7dG7KkO6+9GcUuTcVltIi9:VJ0PlSf2C47zF1HgcvCrGmku9PU/ntI

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 7 IoCs

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

resource	yara_rule
behavioral1/memory/2752-14-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2092-15-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2092-74-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/1420-78-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/1420-77-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2092-186-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2092-187-0x0000000000400000-0x0000000000490000-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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_402a247a67d38ddff6e5807b5156e541.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/2092-2-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2752-14-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2752-12-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2092-15-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2092-74-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/1420-78-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/1420-77-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2092-186-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2092-187-0x0000000000400000-0x0000000000490000-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_402a247a67d38ddff6e5807b5156e541.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_402a247a67d38ddff6e5807b5156e541.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_402a247a67d38ddff6e5807b5156e541.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2092 wrote to memory of 2752	2092	JaffaCakes118_402a247a67d38ddff6e5807b5156e541.exe	28
PID 2092 wrote to memory of 2752	2092	JaffaCakes118_402a247a67d38ddff6e5807b5156e541.exe	28
PID 2092 wrote to memory of 2752	2092	JaffaCakes118_402a247a67d38ddff6e5807b5156e541.exe	28
PID 2092 wrote to memory of 2752	2092	JaffaCakes118_402a247a67d38ddff6e5807b5156e541.exe	28
PID 2092 wrote to memory of 1420	2092	JaffaCakes118_402a247a67d38ddff6e5807b5156e541.exe	30
PID 2092 wrote to memory of 1420	2092	JaffaCakes118_402a247a67d38ddff6e5807b5156e541.exe	30
PID 2092 wrote to memory of 1420	2092	JaffaCakes118_402a247a67d38ddff6e5807b5156e541.exe	30
PID 2092 wrote to memory of 1420	2092	JaffaCakes118_402a247a67d38ddff6e5807b5156e541.exe	30

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_402a247a67d38ddff6e5807b5156e541.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_402a247a67d38ddff6e5807b5156e541.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2092
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_402a247a67d38ddff6e5807b5156e541.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_402a247a67d38ddff6e5807b5156e541.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2752
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_402a247a67d38ddff6e5807b5156e541.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_402a247a67d38ddff6e5807b5156e541.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1420

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\CF97.5AF

Filesize
1KB

MD5
8afd8c95554919105ec0e40cef6fae20

SHA1
c98fcea2e3527445f129cb05816a2be182f0fd2b

SHA256
5f6183beab5b7e51a5c86ed57c4d04bcb45f0a9aef9957897cb8103658b55434

SHA512
8dc4d6691a78eee09fbc6c07e66611ab50bd813d2a8e54a618d6dffea8e1ce70c6c60e14b32b6b8cb8d4558e256e80aaccf98f2fb51c36d71dab98f883f2f2e1

Download Submit
C:\Users\Admin\AppData\Roaming\CF97.5AF

Filesize
600B

MD5
c47970291b9f40adb6779e2509293f4f

SHA1
f07dc5eae9c0b94da301e133289527e5686b864e

SHA256
63094579ddd8d285b7f5a40468bee04d70449ac62d1175d7ce562dd3f477e7cb

SHA512
3e339279d7e45801ade0d2ea83634274b5828a7d3e9d21fdce54578a43057f5e209aabf5aee62c1eb3fe68ea3d13e93d684f2add00e9a382c2cb37705977e10d

Download Submit
C:\Users\Admin\AppData\Roaming\CF97.5AF

Filesize
996B

MD5
2ec111e4dca9e8ce2417e5f2e0402d75

SHA1
80630b4ee2213fc55be4c6d96b829388241fdace

SHA256
dea27f8892d7cc7cbe9a24eb706ef0ae9a74ae9546cb69f655c4b0f7851274b5

SHA512
517e0d83747157fbff9e1bd0bdee6bfbd51af01a1eabb160d715878b9a64d61318b5d27be3410117ed59a95706420c5e1a70335fd575f67f2f5066351d9bf3fd

Download Submit
memory/1420-77-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1420-78-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2092-74-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2092-1-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2092-15-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2092-2-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2092-186-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2092-187-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2752-12-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2752-14-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads