cycbot | 4c3ab62582c73b13152d9165653ab4e308276824ee03d484436d0c3de5295d0e

General

Target

JaffaCakes118_41e9f1f3410db5e4226b9e465582fddc.exe
Size

170KB
MD5

41e9f1f3410db5e4226b9e465582fddc
SHA1

9e445a5220f6a19d300f55a416c2f55ace50a5a5
SHA256

4c3ab62582c73b13152d9165653ab4e308276824ee03d484436d0c3de5295d0e
SHA512

423d741f9d9e415247146cde9cf372671c02db7a6d5a8fd96a5545e4b6aa2410579c6a397e6b47c6c747efe55b4f8823cec7186ec6405fe390413737702991e9
SSDEEP

3072:dPrNKNOnU+1V0jf4QtQq9Pphxq1/+JtmqD5sn4sNCVW3k:dPrNKNmx1V0j3NPdq1mTFYtNr

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 6 IoCs

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

resource	yara_rule
behavioral1/memory/2288-16-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2072-17-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2072-18-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2072-81-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1644-85-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2072-184-0x0000000000400000-0x0000000000491000-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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\37ED3\\7243D.exe"	JaffaCakes118_41e9f1f3410db5e4226b9e465582fddc.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/2072-2-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2288-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2288-16-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2072-17-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2072-18-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2072-81-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1644-83-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1644-85-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2072-184-0x0000000000400000-0x0000000000491000-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_41e9f1f3410db5e4226b9e465582fddc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_41e9f1f3410db5e4226b9e465582fddc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_41e9f1f3410db5e4226b9e465582fddc.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2072 wrote to memory of 2288	2072	JaffaCakes118_41e9f1f3410db5e4226b9e465582fddc.exe	31
PID 2072 wrote to memory of 2288	2072	JaffaCakes118_41e9f1f3410db5e4226b9e465582fddc.exe	31
PID 2072 wrote to memory of 2288	2072	JaffaCakes118_41e9f1f3410db5e4226b9e465582fddc.exe	31
PID 2072 wrote to memory of 2288	2072	JaffaCakes118_41e9f1f3410db5e4226b9e465582fddc.exe	31
PID 2072 wrote to memory of 1644	2072	JaffaCakes118_41e9f1f3410db5e4226b9e465582fddc.exe	33
PID 2072 wrote to memory of 1644	2072	JaffaCakes118_41e9f1f3410db5e4226b9e465582fddc.exe	33
PID 2072 wrote to memory of 1644	2072	JaffaCakes118_41e9f1f3410db5e4226b9e465582fddc.exe	33
PID 2072 wrote to memory of 1644	2072	JaffaCakes118_41e9f1f3410db5e4226b9e465582fddc.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41e9f1f3410db5e4226b9e465582fddc.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41e9f1f3410db5e4226b9e465582fddc.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2072
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41e9f1f3410db5e4226b9e465582fddc.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41e9f1f3410db5e4226b9e465582fddc.exe startC:\Program Files (x86)\LP\9A63\A81.exe%C:\Program Files (x86)\LP\9A63
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2288
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41e9f1f3410db5e4226b9e465582fddc.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41e9f1f3410db5e4226b9e465582fddc.exe startC:\Program Files (x86)\D36BB\lvvm.exe%C:\Program Files (x86)\D36BB
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1644

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\37ED3\36BB.7ED

Filesize
1KB

MD5
7200bfcff773ae04651b33bf0d1acfe2

SHA1
0c81e23345b75cfc483547155815fd510270b12a

SHA256
6d8c88549dc57b05522b7b2b2cb11e42c06f1f682cd625a1a63f8e362c01d834

SHA512
f5a9e667a45db9733665f8bd8e5f21c1bcfb3fa33810268687ddad0820c45bb40856b4b36ad7d9df12c87a1094d7c2c9a651e68588feb877537039806982a743

Download Submit
C:\Users\Admin\AppData\Roaming\37ED3\36BB.7ED

Filesize
600B

MD5
e3cfaa93de70ce933c78c0f2a3abe209

SHA1
84fc979abc7d186f030a57bdfd710bc72247c130

SHA256
7cabda6f8fd6daf3bc5b8474c3e20e6511f274b0bfab62b232560e96924cde80

SHA512
a7c972e398e79005cc8e1f1dd47b139773e6e5bb0a1107930017461746869d9823e5a897317b0f8bdf4614d5efa2eb3883481c67e22acfd19fc45c12a4409589

Download Submit
memory/1644-85-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1644-83-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2072-18-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2072-17-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2072-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2072-81-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2072-2-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2072-184-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2288-16-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2288-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2288-13-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads