cycbot | 6a42333eee223a81af76e46d605ca15750c1bab184f04f5d00db99b2730a29cc

General

Target

JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe
Size

193KB
MD5

a9f4dd05848bc161f07f25e4cbd7a39c
SHA1

3dda08ba4c98955387ddb723dec4bffaf5983eb7
SHA256

6a42333eee223a81af76e46d605ca15750c1bab184f04f5d00db99b2730a29cc
SHA512

dcc1ef3c4c4278b9c344d2658357dc209c2076516767b08157f01f737a4c71d07e5474b8f47d8be2a9771828feaa62137cb0ecc84d7e004b761824f17ba7939e
SSDEEP

3072:yHHN8CLR+nW80MxHlyltZclt2+P2akh/LkI3XOUOOTcQ5E7W/Tuetf86kru:0HjsmYlMtOt282VhQSTcvW706R

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/2368-15-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral1/memory/2368-14-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral1/memory/1732-16-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral1/memory/452-78-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral1/memory/1732-139-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral1/memory/1732-175-0x0000000000400000-0x0000000000470000-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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.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 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1732-2-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/2368-15-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/2368-14-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/1732-16-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/452-77-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/452-78-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/1732-139-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/1732-175-0x0000000000400000-0x0000000000470000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 1 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_a9f4dd05848bc161f07f25e4cbd7a39c.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1732 wrote to memory of 2368	1732	JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe	31
PID 1732 wrote to memory of 2368	1732	JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe	31
PID 1732 wrote to memory of 2368	1732	JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe	31
PID 1732 wrote to memory of 2368	1732	JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe	31
PID 1732 wrote to memory of 452	1732	JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe	32
PID 1732 wrote to memory of 452	1732	JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe	32
PID 1732 wrote to memory of 452	1732	JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe	32
PID 1732 wrote to memory of 452	1732	JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1732
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  PID:2368
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  PID:452

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\7345.5C4

Filesize
1KB

MD5
1825ca3fdddc98872f7f68f8258ac0aa

SHA1
2c3f96bf75aa7e07b4dda37a4e2d208c5d95d21e

SHA256
b79a402d8ee40b4a277a0e994bed5439ab6e0ed79cc97137e50b8c17cab5d98b

SHA512
a9f945dbb67e8e471b0568e816699912cde918122377af581f7c5ed59bfffb7b2d000c7660417a517cd69db668c833576797e12f3992ed80c274cf1cfe9f8814

Download Submit
C:\Users\Admin\AppData\Roaming\7345.5C4

Filesize
1KB

MD5
561c5510069b72854ad1230ebb30ef56

SHA1
af16ad48aae3ee9a7f2cdc7c8ccbf00f3277181f

SHA256
a7d49b52d82e635b245f581caf5fa340f680c6a480ad9a91bf9d50f5bd055e34

SHA512
a69ba790209f05d53182017b63c6db1b965a65af1efeef628f09082c0a2921c228b5398cfecfdc4cff5dac8c2f5d086371bd4a2f41a8c0ae92372bfa7275f20c

Download Submit
C:\Users\Admin\AppData\Roaming\7345.5C4

Filesize
600B

MD5
e683ffcbf747097e7078a9b15a9a7d41

SHA1
f81790afdd5575c0c6534676005e4b320d686240

SHA256
0e4ee5d811e2d144c0aed6b9282ef9914c467e7db03a91be7b8aeee1f370724d

SHA512
d98fc2d38f73b692593db82ddb17e936612068f5a6aeedd6c99959bedfe95d8b5ceea3b9d20fb732a4a5a44cee6e86fd8d7a757489b0f483c27d93548050982f

Download Submit
C:\Users\Admin\AppData\Roaming\7345.5C4

Filesize
996B

MD5
68c0b95c1cd0bc5d5bb6268800c66f71

SHA1
0e46e7247c240db802721d3b7fe2a0b2a3b1efcf

SHA256
cce992f37f08bf88210d36da762a1f0dcc8f29a737e12c964111091ee63a54d3

SHA512
9866b3e2b2fbb6ce8f649d6991c580e3697187df25962fc64070195fb72ecde85a65b3e7a05eb052b59e4b19a39e336af61cfd15143614108defc76132366050

Download Submit
memory/452-77-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/452-78-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1732-16-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1732-1-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1732-139-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1732-2-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1732-175-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2368-14-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2368-15-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2368-12-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads