cycbot | 2dbfb33c7983dabc2d94ca0018661a0ac22f3fb212e13fcdc144f6a933bc3761

General

Target

d5eddf7321df60483dec4138d26e2118_JaffaCakes118.exe
Size

170KB
MD5

d5eddf7321df60483dec4138d26e2118
SHA1

3955158ee5711e9ce9cecc5f7146ef931254018e
SHA256

2dbfb33c7983dabc2d94ca0018661a0ac22f3fb212e13fcdc144f6a933bc3761
SHA512

3739d17a9e026618c5af6e2bd6b703b9b16cf8b1ea6ebbba0210df102434984c2ac1bb990cc2ea740af9d64b39168a6a8cba790857577a3ace2a0c66b74e4c9c
SSDEEP

3072:D2d9X4953BCnv+nbPyx/gKeGv6QyqV9ERa9zPdolLPE0wazbIL6TR:DUI9tTbxK/v2qrV9zPOlLPE/Y

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/2696-14-0x0000000000400000-0x0000000000444000-memory.dmp	family_cycbot
behavioral1/memory/2732-15-0x0000000000400000-0x0000000000444000-memory.dmp	family_cycbot
behavioral1/memory/2732-76-0x0000000000400000-0x0000000000444000-memory.dmp	family_cycbot
behavioral1/memory/636-78-0x0000000000400000-0x0000000000444000-memory.dmp	family_cycbot
behavioral1/memory/2732-181-0x0000000000400000-0x0000000000444000-memory.dmp	family_cycbot

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\conhost = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\conhost.exe"	d5eddf7321df60483dec4138d26e2118_JaffaCakes118.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2732-2-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral1/memory/2696-13-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral1/memory/2696-14-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral1/memory/2732-15-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral1/memory/2732-76-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral1/memory/636-78-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral1/memory/2732-181-0x0000000000400000-0x0000000000444000-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	d5eddf7321df60483dec4138d26e2118_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d5eddf7321df60483dec4138d26e2118_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d5eddf7321df60483dec4138d26e2118_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2732 wrote to memory of 2696	2732	d5eddf7321df60483dec4138d26e2118_JaffaCakes118.exe	31
PID 2732 wrote to memory of 2696	2732	d5eddf7321df60483dec4138d26e2118_JaffaCakes118.exe	31
PID 2732 wrote to memory of 2696	2732	d5eddf7321df60483dec4138d26e2118_JaffaCakes118.exe	31
PID 2732 wrote to memory of 2696	2732	d5eddf7321df60483dec4138d26e2118_JaffaCakes118.exe	31
PID 2732 wrote to memory of 636	2732	d5eddf7321df60483dec4138d26e2118_JaffaCakes118.exe	33
PID 2732 wrote to memory of 636	2732	d5eddf7321df60483dec4138d26e2118_JaffaCakes118.exe	33
PID 2732 wrote to memory of 636	2732	d5eddf7321df60483dec4138d26e2118_JaffaCakes118.exe	33
PID 2732 wrote to memory of 636	2732	d5eddf7321df60483dec4138d26e2118_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\d5eddf7321df60483dec4138d26e2118_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d5eddf7321df60483dec4138d26e2118_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2732
- C:\Users\Admin\AppData\Local\Temp\d5eddf7321df60483dec4138d26e2118_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\d5eddf7321df60483dec4138d26e2118_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\dwm.exe%C:\Users\Admin\AppData\Roaming
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2696
- C:\Users\Admin\AppData\Local\Temp\d5eddf7321df60483dec4138d26e2118_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\d5eddf7321df60483dec4138d26e2118_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:636

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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\35A5.B3E

Filesize
1KB

MD5
57485cd83ff95eca04edeeecd092049e

SHA1
105c78f9ef564aef4d265c212ebb98c962c36ae9

SHA256
ae195d4fb29e26c6494e52e718c6380762925e587df4310dc8d95080d7a704e5

SHA512
6bce08c7cff64ac9f6d4c89b4e59c894398f6fb4ac9c29e3c629b55c1485994adbc783b74ad89ce29a8c888020d02264577043af0ab520f8a07cb8b2f0accb31

Download Submit
C:\Users\Admin\AppData\Roaming\35A5.B3E

Filesize
600B

MD5
51872002d898b58e9a5dce520f0dda51

SHA1
996cb23516903d72d84f4f9f849a303313efbf71

SHA256
05f1985ba67a35b82197a7c0bd818fdecc110d7ff4640f34554cf9f7799cc45f

SHA512
a8d5644d24323d46484f8517556ee59593e04045e02853655c73bd56a19068b54ee90019df87155f3e5ff78d4a38e189ec2ed0549c6318bb04ec1734278ed965

Download Submit
C:\Users\Admin\AppData\Roaming\35A5.B3E

Filesize
996B

MD5
9762f8c9c04c67f420179153a1f9db9f

SHA1
ac56b7b2bbf8c2beb3b93415bc5e95a123a4b583

SHA256
1174fe170acd85968f9c6c612f202e67e37d9d7f12e79f1861d1003f9da0a3b7

SHA512
e40a285b6cd6a5a7199579a6d08c7023201ae6b7771ed881426513f64bba306946a3532565018833d1077e59618c5ff459f92a90de30ce71d2c0c6ae7e9210fd

Download Submit
memory/636-78-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2696-13-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2696-12-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2696-14-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2732-1-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2732-2-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2732-15-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2732-76-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2732-181-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads