cycbot | f5d62333bef69a364a02add353740faba3c8cca6d0ce61296d9f2ad0e93b5af8

General

Target

e9981d36726dbb73c41a9cb316b7216e_JaffaCakes118.exe
Size

168KB
MD5

e9981d36726dbb73c41a9cb316b7216e
SHA1

4e68febd2d459b49d87571b94cf379501cfb0dae
SHA256

f5d62333bef69a364a02add353740faba3c8cca6d0ce61296d9f2ad0e93b5af8
SHA512

b0d9bc4c7c48975bba102d54a2e72acb1f6a16d0e651f3d37ebbdd70595032a5a7c22ce0b5dca29aa88c93d8d16280674faa3a7eb014e3506eddaffb917eccff
SSDEEP

3072:FUdo2Ikz/Kf4fvD0b+8rHNI/o8zUhJIOxX669D4/15DxG7ls19+PHQ9:uO2IWKf4fvC+au/sPhonDouaPHQ9

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 5 IoCs

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

resource	yara_rule
behavioral1/memory/1036-7-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2460-15-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2460-80-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/772-84-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2460-183-0x0000000000400000-0x000000000048A000-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\\dwm.exe"	e9981d36726dbb73c41a9cb316b7216e_JaffaCakes118.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/2460-2-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/1036-7-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/1036-6-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/1036-5-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2460-15-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2460-80-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/772-82-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/772-84-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2460-183-0x0000000000400000-0x000000000048A000-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	e9981d36726dbb73c41a9cb316b7216e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e9981d36726dbb73c41a9cb316b7216e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e9981d36726dbb73c41a9cb316b7216e_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2460 wrote to memory of 1036	2460	e9981d36726dbb73c41a9cb316b7216e_JaffaCakes118.exe	31
PID 2460 wrote to memory of 1036	2460	e9981d36726dbb73c41a9cb316b7216e_JaffaCakes118.exe	31
PID 2460 wrote to memory of 1036	2460	e9981d36726dbb73c41a9cb316b7216e_JaffaCakes118.exe	31
PID 2460 wrote to memory of 1036	2460	e9981d36726dbb73c41a9cb316b7216e_JaffaCakes118.exe	31
PID 2460 wrote to memory of 772	2460	e9981d36726dbb73c41a9cb316b7216e_JaffaCakes118.exe	33
PID 2460 wrote to memory of 772	2460	e9981d36726dbb73c41a9cb316b7216e_JaffaCakes118.exe	33
PID 2460 wrote to memory of 772	2460	e9981d36726dbb73c41a9cb316b7216e_JaffaCakes118.exe	33
PID 2460 wrote to memory of 772	2460	e9981d36726dbb73c41a9cb316b7216e_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\e9981d36726dbb73c41a9cb316b7216e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e9981d36726dbb73c41a9cb316b7216e_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2460
- C:\Users\Admin\AppData\Local\Temp\e9981d36726dbb73c41a9cb316b7216e_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e9981d36726dbb73c41a9cb316b7216e_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1036
- C:\Users\Admin\AppData\Local\Temp\e9981d36726dbb73c41a9cb316b7216e_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e9981d36726dbb73c41a9cb316b7216e_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:772

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\8ED5.559

Filesize
1KB

MD5
0d3672ebbaf032b85f1945b75e0d942a

SHA1
49714f3e1522d9057ddb604dde84540f575929f0

SHA256
359f933d061e08285f20400b06ee9bbaf81b0cc439f68978aa7bc28b858b745a

SHA512
c0009ac31e6678773038f36cb3903b52259c6fa313b3629d1c76312c875c9d151fbf0d7c26bfe5f74061033e197f28abb3533a772e73a1778e3cf915c54830a8

Download Submit
C:\Users\Admin\AppData\Roaming\8ED5.559

Filesize
600B

MD5
046026b5a4d7df588efb9eed9a28503e

SHA1
4850877df9ecadeb9ce480e19490771dcd729fb5

SHA256
f17affec72b3078977ef537e14f646425eea6aa17e22b03439e06580abc3ebb9

SHA512
db44dc39a90c750d8eced99c535df611e46ca781c5dca01d5b60fbf39d070ff45aae983815253cece65304a8bd97d01a296ce52eb8c043b9855a62e5bac2ecdb

Download Submit
C:\Users\Admin\AppData\Roaming\8ED5.559

Filesize
996B

MD5
08ab49454c438dac7944cdc51dc8477f

SHA1
1ee2a4009989c01fb0820197a076ef4e1d9a0eb5

SHA256
2643fd05c709e3b546023cbc00fc2796137aca3d9ae8e0a41e7ac9378cbd2301

SHA512
88c99150aa444e1ab0822c18998923cec5e51638a5865825980632392f1ef675e55875b2ffbf9a711f0d9284b90290802c6f508706e94be6b51162e09479501b

Download Submit
memory/772-82-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/772-84-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/1036-5-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/1036-6-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/1036-7-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2460-15-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2460-80-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2460-1-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2460-2-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2460-183-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads