cycbot | 045f7e4cf53b37c38b8ef23b29ab8e5f9282aad9418542738d54d7116169ba22

General

Target

ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe
Size

174KB
MD5

ea635810a0cbf6b490bb36bb807526fc
SHA1

ed058bfc1a381d6ed054c6e0db091224aed63782
SHA256

045f7e4cf53b37c38b8ef23b29ab8e5f9282aad9418542738d54d7116169ba22
SHA512

6201a609956cdf5d3daf9f8c4ba966b7e09a8b293cb156d8f1c0aec04299bc0f0439b56d38b6d95412b67878482bf899c10a2c14e58d4b7b9883bfd88000102a
SSDEEP

3072:2DyxASvS6A2VnAcRDzGF3ZCf8kA+HFJQ+udou:2DyxAfr10DldAwFdHu

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/2288-15-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2436-16-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2448-87-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2448-88-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2436-149-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2436-153-0x0000000000400000-0x000000000048D000-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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	ea635810a0cbf6b490bb36bb807526fc_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/2436-3-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2288-12-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2288-15-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2288-14-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2436-16-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2448-87-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2448-88-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2436-149-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2436-153-0x0000000000400000-0x000000000048D000-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	ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2436 wrote to memory of 2288	2436	ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe	31
PID 2436 wrote to memory of 2288	2436	ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe	31
PID 2436 wrote to memory of 2288	2436	ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe	31
PID 2436 wrote to memory of 2288	2436	ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe	31
PID 2436 wrote to memory of 2448	2436	ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe	33
PID 2436 wrote to memory of 2448	2436	ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe	33
PID 2436 wrote to memory of 2448	2436	ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe	33
PID 2436 wrote to memory of 2448	2436	ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2436
- C:\Users\Admin\AppData\Local\Temp\ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2288
- C:\Users\Admin\AppData\Local\Temp\ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2448

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\3B6A.4A1

Filesize
1KB

MD5
e1443cf067595c35941c67404d3205aa

SHA1
6a40a9cd5977048bb162dc5ac6fb658a2e53cf42

SHA256
04cc34d5dd7d7f914276d49c5de8d31a57553e103a7215d8579e02f1da3ef965

SHA512
794ae687b0ed8e2499d074b6d149e89a4fc48618125c2f24a4dbec0779441409c3ff24afeb41c84a8ab4de6cb9e4dc602b3f5737dda067545422fce94c103afd

Download Submit
C:\Users\Admin\AppData\Roaming\3B6A.4A1

Filesize
600B

MD5
bc550ede56e73f04b9b158b782d4b48c

SHA1
5fee5d0343867f99663d2da07ef0e44cac605f20

SHA256
cc17243d4cda12e6f82b0cb01a196b389bb0194aed868280561b0a940badda92

SHA512
cceed6152eb62f3ddd74333d5f06bfdb861e28c8548b1fcbeb1c22988fed21a5c6ad614be06d7244aa7a0a13f58afbc4c01da51e303e9bb8007b4f0a286b8507

Download Submit
C:\Users\Admin\AppData\Roaming\3B6A.4A1

Filesize
996B

MD5
d1218ed1bc65002451b7886b00d1340a

SHA1
3f18a9555ce524880bcd3a5d43e93ba2813363d2

SHA256
5bcc5b8f4d6435ddc433324153695d42caf1ca1c304e21dfda3a88a16ac714d0

SHA512
aea7ac17a057ca4fc679aca2428c95a937b8c8bcc7e1961764efa2f2703ed59a7affba40065e8c0a6bb73a9f913141368915d4da46abb0d8470e7e11df357e19

Download Submit
memory/2288-15-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2288-14-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2288-12-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2436-16-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2436-1-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2436-3-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2436-149-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2436-153-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2448-87-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2448-88-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2448-85-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads