cycbot | 815f8274db23797774fd56ac8dd03f38c036aa70d7e9235df5fe78891b61e54e

General

Target

JaffaCakes118_56fcdf26733a537f9bd509db8d58e3bf.exe
Size

164KB
MD5

56fcdf26733a537f9bd509db8d58e3bf
SHA1

3d67a361a787f70aacbd2c9f17772328aac60c75
SHA256

815f8274db23797774fd56ac8dd03f38c036aa70d7e9235df5fe78891b61e54e
SHA512

66817638aba4e0d0a0d7aa4d7174f63e98a33607646df3aaaf9f50c4ebeb5eb43740b6715e09d44a8bf39ea711dd323580a5e2b49c60462e9aed502b2d003e47
SSDEEP

3072:BYh9WB1m5e4LEgbd4Ny+pZCo4/nVxd0O8ZTCRNaa7TkjX58zFsJcDcL:GQD4LEcd4Ny8u/Vxd0b2RA6kjJ8zFbQ

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/2064-17-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2484-18-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2484-19-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/1796-131-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2484-132-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2484-294-0x0000000000400000-0x0000000000490000-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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\FF4D3\\6041A.exe"	JaffaCakes118_56fcdf26733a537f9bd509db8d58e3bf.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 10 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2484-3-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2064-14-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2064-15-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2064-17-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2484-18-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2484-19-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/1796-129-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/1796-131-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2484-132-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2484-294-0x0000000000400000-0x0000000000490000-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_56fcdf26733a537f9bd509db8d58e3bf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_56fcdf26733a537f9bd509db8d58e3bf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_56fcdf26733a537f9bd509db8d58e3bf.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2484 wrote to memory of 2064	2484	JaffaCakes118_56fcdf26733a537f9bd509db8d58e3bf.exe	31
PID 2484 wrote to memory of 2064	2484	JaffaCakes118_56fcdf26733a537f9bd509db8d58e3bf.exe	31
PID 2484 wrote to memory of 2064	2484	JaffaCakes118_56fcdf26733a537f9bd509db8d58e3bf.exe	31
PID 2484 wrote to memory of 2064	2484	JaffaCakes118_56fcdf26733a537f9bd509db8d58e3bf.exe	31
PID 2484 wrote to memory of 1796	2484	JaffaCakes118_56fcdf26733a537f9bd509db8d58e3bf.exe	33
PID 2484 wrote to memory of 1796	2484	JaffaCakes118_56fcdf26733a537f9bd509db8d58e3bf.exe	33
PID 2484 wrote to memory of 1796	2484	JaffaCakes118_56fcdf26733a537f9bd509db8d58e3bf.exe	33
PID 2484 wrote to memory of 1796	2484	JaffaCakes118_56fcdf26733a537f9bd509db8d58e3bf.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_56fcdf26733a537f9bd509db8d58e3bf.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_56fcdf26733a537f9bd509db8d58e3bf.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2484
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_56fcdf26733a537f9bd509db8d58e3bf.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_56fcdf26733a537f9bd509db8d58e3bf.exe startC:\Program Files (x86)\LP\1A9F\AC3.exe%C:\Program Files (x86)\LP\1A9F
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2064
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_56fcdf26733a537f9bd509db8d58e3bf.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_56fcdf26733a537f9bd509db8d58e3bf.exe startC:\Program Files (x86)\D309F\lvvm.exe%C:\Program Files (x86)\D309F
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1796

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\FF4D3\309F.F4D

Filesize
996B

MD5
e75d67801da511f13f95e10ebadb9723

SHA1
37863946549b0136f3e5fb1262a628fa5e528fe2

SHA256
dbd5f8f91f57c729cb94bc61851060353f2be250c583343b25b0089c98f2ebc9

SHA512
8711d54a142d09126c24c69f008a60133154aaa2a68d81c7aea35967db1462e34e0024f303bd09f9a76fad19c849cd8d82bb4d7616e52b2d3ed3f3c42662b95f

Download Submit
C:\Users\Admin\AppData\Roaming\FF4D3\309F.F4D

Filesize
600B

MD5
b055bf80952cc15592b5c326f0be33f2

SHA1
e4aa36617116c020bd1e7d941df0676a49295179

SHA256
df0e11f46255cf1aa195750ca91860014e69eab36748c1d39ece1b473d8b0e75

SHA512
6c8b3c5c37de82a5287848195e34d4bac482810ab5c47b5a7a321a26865aa1a13cb31a757d5b5405f3d6b39cf8b53b97acfaaa360add5e893be1812f630c5efa

Download Submit
C:\Users\Admin\AppData\Roaming\FF4D3\309F.F4D

Filesize
1KB

MD5
150718c477ed4e4aaeb501ab2b8d6aa2

SHA1
20c9558853b2d15483e2ec961b2b42d6d7766691

SHA256
1774edfee1f3b0cbdaad051b4f58bea5a126b3c1fa5e5cae383bddd5f02b96b4

SHA512
90fa6d0b0b7927a97cef8da1a83e3f7b878e626eef958e6418b807558602ca5231d36b466fbd48ab090444684f32dec0986305fea39e8f8f5a623d9a8613bd57

Download Submit
memory/1796-131-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1796-129-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2064-14-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2064-17-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2064-15-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2484-18-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2484-19-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2484-0-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2484-132-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2484-3-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2484-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2484-294-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads