cycbot | 6e2e612f9370c783e1530a334c3ed7a4fa3c3aeb51c06a0354ad82cf95e3c616

General

Target

JaffaCakes118_52cab382c53b6b75d9e279760db6e04d.exe
Size

172KB
MD5

52cab382c53b6b75d9e279760db6e04d
SHA1

27c39ae79affa010bcd231ea403f66d6a8714658
SHA256

6e2e612f9370c783e1530a334c3ed7a4fa3c3aeb51c06a0354ad82cf95e3c616
SHA512

e30275c790c4aafebc427163d496f12f07be38e692e8da6b1a2494126dea8a4cfb4a4550323cbc103670daed2c31479fb8eb49e8e29be6d5392f6f5dfda559e2
SSDEEP

3072:GTDe1ALKu5G16xm7NI+inhd3x480mXjodBVCPbmVdP+Agiid1Rg9zJIHJDrWVtw6:MDe141xaohRx48sYPb2dGsqkzKHJkw6

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/2204-15-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2236-16-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2236-17-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/1656-112-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1656-111-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2236-113-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2236-287-0x0000000000400000-0x0000000000491000-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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\95447\\6AC2C.exe"	JaffaCakes118_52cab382c53b6b75d9e279760db6e04d.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/2236-3-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2204-13-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2204-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2236-16-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2236-17-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/1656-112-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1656-111-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2236-113-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2236-287-0x0000000000400000-0x0000000000491000-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_52cab382c53b6b75d9e279760db6e04d.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2236 wrote to memory of 2204	2236	JaffaCakes118_52cab382c53b6b75d9e279760db6e04d.exe	31
PID 2236 wrote to memory of 2204	2236	JaffaCakes118_52cab382c53b6b75d9e279760db6e04d.exe	31
PID 2236 wrote to memory of 2204	2236	JaffaCakes118_52cab382c53b6b75d9e279760db6e04d.exe	31
PID 2236 wrote to memory of 2204	2236	JaffaCakes118_52cab382c53b6b75d9e279760db6e04d.exe	31
PID 2236 wrote to memory of 1656	2236	JaffaCakes118_52cab382c53b6b75d9e279760db6e04d.exe	33
PID 2236 wrote to memory of 1656	2236	JaffaCakes118_52cab382c53b6b75d9e279760db6e04d.exe	33
PID 2236 wrote to memory of 1656	2236	JaffaCakes118_52cab382c53b6b75d9e279760db6e04d.exe	33
PID 2236 wrote to memory of 1656	2236	JaffaCakes118_52cab382c53b6b75d9e279760db6e04d.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_52cab382c53b6b75d9e279760db6e04d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_52cab382c53b6b75d9e279760db6e04d.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2236
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_52cab382c53b6b75d9e279760db6e04d.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_52cab382c53b6b75d9e279760db6e04d.exe startC:\Program Files (x86)\LP\2C09\619.exe%C:\Program Files (x86)\LP\2C09
  2⤵
  PID:2204
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_52cab382c53b6b75d9e279760db6e04d.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_52cab382c53b6b75d9e279760db6e04d.exe startC:\Program Files (x86)\47A39\lvvm.exe%C:\Program Files (x86)\47A39
  2⤵
  PID:1656

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\95447\7A39.544

Filesize
996B

MD5
576e49e1c04f73237f02c7e2b8ab4716

SHA1
cc2c9337b03588b2fd33db6208d55e8258f05a8f

SHA256
b5fb63878a3e3a20862dc743129adbf103f16abbf12ef698e2851fe3b2bed86e

SHA512
5270938baf1825a25733854620f867e7a7bd40352ebbd22ef120d1bacfcdbafaf7c85381dc462b071fa2bd346b0bcb50dae150db5c4de44d9dda92b6aa638072

Download Submit
C:\Users\Admin\AppData\Roaming\95447\7A39.544

Filesize
600B

MD5
7cea36b50a0e1990fea1949693e79e3f

SHA1
20a8ccb2d84c3c9af5756ae6d5e61505e411f20c

SHA256
e1661a31265cf9b1eb6fdf7bdb37df16a9e1e7ead4d9c43335bbcb0afc03e4d6

SHA512
eb4f8c32a56136b6310e3e2c19a473f4c4c8a31cc81de57508721e62efffdcea3aa13a864eda11688218960c33dee11a3c28226d1f8fc61861f79db931061099

Download Submit
C:\Users\Admin\AppData\Roaming\95447\7A39.544

Filesize
1KB

MD5
41fa09e726b1707312416fb6e78ba166

SHA1
de403342b421f5eba2d99bfb504756a3658c61b3

SHA256
bdfe8b449c7c39195dda4d2f114786797bd2929edf2d0d40baad2979bdd6b0e2

SHA512
b6a541ab6be0c2e69a1c90013c7cb1bdfb6e4c82ca7c552af024422ea6fd228d50e92d7926c9cf7a285d312fdb24b57ac171a23777281c1b26b3f3ff86b19fec

Download Submit
memory/1656-111-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1656-112-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2204-12-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2204-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2204-13-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2236-17-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2236-16-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2236-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2236-113-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2236-3-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2236-287-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads