cycbot | b6c63a936e101dc3784d42983eb6efe4f937ac735fbe5808898bf76334cdd290

General

Target

fb94b0a4ac7d7fff50a121024061222a_JaffaCakes118.exe
Size

169KB
MD5

fb94b0a4ac7d7fff50a121024061222a
SHA1

be03b847836f1ca452bafaac0c872ef34eabbb80
SHA256

b6c63a936e101dc3784d42983eb6efe4f937ac735fbe5808898bf76334cdd290
SHA512

a3f443c8bd210229024bbce1b8cdacd42d26c7234d9ea1a210948b3b55e1aa21ad311744c9a438f5eda6e2a3924a0d0c42ddab78f723ff072352e43dd48df1b8
SSDEEP

3072:BbUL4+8zsVOIZ/rpMT66y0v8LNDZLuha5IUdrpjfWy9qK6PNWKvEoufZZn8X:Oy8lMtyW8LNlLuOIUTfWKqKuNrvEz+X

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/2576-6-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2576-7-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2404-15-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2404-76-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/664-80-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2404-156-0x0000000000400000-0x000000000046A000-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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	fb94b0a4ac7d7fff50a121024061222a_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/2404-2-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2576-6-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2576-5-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2576-7-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2404-15-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2404-76-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/664-80-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/664-79-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2404-156-0x0000000000400000-0x000000000046A000-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	fb94b0a4ac7d7fff50a121024061222a_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fb94b0a4ac7d7fff50a121024061222a_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fb94b0a4ac7d7fff50a121024061222a_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2404 wrote to memory of 2576	2404	fb94b0a4ac7d7fff50a121024061222a_JaffaCakes118.exe	30
PID 2404 wrote to memory of 2576	2404	fb94b0a4ac7d7fff50a121024061222a_JaffaCakes118.exe	30
PID 2404 wrote to memory of 2576	2404	fb94b0a4ac7d7fff50a121024061222a_JaffaCakes118.exe	30
PID 2404 wrote to memory of 2576	2404	fb94b0a4ac7d7fff50a121024061222a_JaffaCakes118.exe	30
PID 2404 wrote to memory of 664	2404	fb94b0a4ac7d7fff50a121024061222a_JaffaCakes118.exe	33
PID 2404 wrote to memory of 664	2404	fb94b0a4ac7d7fff50a121024061222a_JaffaCakes118.exe	33
PID 2404 wrote to memory of 664	2404	fb94b0a4ac7d7fff50a121024061222a_JaffaCakes118.exe	33
PID 2404 wrote to memory of 664	2404	fb94b0a4ac7d7fff50a121024061222a_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\fb94b0a4ac7d7fff50a121024061222a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fb94b0a4ac7d7fff50a121024061222a_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2404
- C:\Users\Admin\AppData\Local\Temp\fb94b0a4ac7d7fff50a121024061222a_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\fb94b0a4ac7d7fff50a121024061222a_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2576
- C:\Users\Admin\AppData\Local\Temp\fb94b0a4ac7d7fff50a121024061222a_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\fb94b0a4ac7d7fff50a121024061222a_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:664

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\9C0D.67A

Filesize
1KB

MD5
88dece809975103be73e0c6b9aa7c204

SHA1
9f5fc399e8fce399faf82e2b042789564d4421a8

SHA256
5aacb1bc7f538d86fc0b131ebf7182b6daded8248b87da2f3c2921b419e3932c

SHA512
e3cae219cc9dc8c0076d0367896ced2d6c6ff0aa1859d0e2a832061fc61af8c60fa175c12f9bb39177d770c13385627955465812a4d9014f57a9923aafd62cb9

Download Submit
C:\Users\Admin\AppData\Roaming\9C0D.67A

Filesize
600B

MD5
65093f724f7e9c5eb834c484473c234f

SHA1
e0635af339b403aa9e3af209a5add191a57ae384

SHA256
5a8a6637af7ac0a15c655a1f168440de2f0d1fe92bc7b56aba82807060f2a67b

SHA512
79db1bab44f0e5c2f3335ea8fc3bbf7a7713256feffa2945b9b1620de5b27e6d0d0c2c9e30e701bc679397006f84b9f2e015a6e1976339494f573ddb52e5583d

Download Submit
C:\Users\Admin\AppData\Roaming\9C0D.67A

Filesize
996B

MD5
f14dd959659f61592e89e3ac04bda3e3

SHA1
aaaf59fcd970ae4f1391f73a87f26d6299ffa426

SHA256
9275d0134be23a931ec2aa45ad70ca637ea94ffff905b9ac5acc6734a68a48bc

SHA512
4c15b212ac6aee9886be17ede850ef984a2891f83e80dee1660db362bc96b981d8940399114aa557e7cf12c255535436d491548238d34c3c3bd4941eb514fd34

Download Submit
memory/664-79-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/664-80-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2404-15-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2404-76-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2404-1-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2404-2-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2404-156-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2576-7-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2576-5-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2576-6-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads