cycbot | 210e53389f31229737bff81b5d7959563e311c8f718ff439035a31da3c3b8a8c

General

Target

JaffaCakes118_74ce5b017a38597f7f82f49d108eb747.exe
Size

165KB
MD5

74ce5b017a38597f7f82f49d108eb747
SHA1

73dafc8339923aa6589baf546917bf797b35e406
SHA256

210e53389f31229737bff81b5d7959563e311c8f718ff439035a31da3c3b8a8c
SHA512

8b14b2b4b48ec4949d1fef77cd4b7a0280c08092c06dd214e812db7fc1ba29a7e614690ceb599720a0d008ba52f90d24933517917db6e28f55092f3cd6c51cf0
SSDEEP

3072:rDSpSLmyts3JgpAOV2E/RhNpgULX8LHodser6D8g8tFlr7pJa8ihWIpRq5M:niSLmytGJ+VX/lpgUILIdX6P8J5Ja8I1

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/2712-17-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2284-18-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/1800-132-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2284-133-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2284-303-0x0000000000400000-0x0000000000490000-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\\E251C\\49232.exe"	JaffaCakes118_74ce5b017a38597f7f82f49d108eb747.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 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2712-17-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2284-18-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/1800-132-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2284-133-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2284-303-0x0000000000400000-0x0000000000490000-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	JaffaCakes118_74ce5b017a38597f7f82f49d108eb747.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_74ce5b017a38597f7f82f49d108eb747.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_74ce5b017a38597f7f82f49d108eb747.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2284 wrote to memory of 2712	2284	JaffaCakes118_74ce5b017a38597f7f82f49d108eb747.exe	28
PID 2284 wrote to memory of 2712	2284	JaffaCakes118_74ce5b017a38597f7f82f49d108eb747.exe	28
PID 2284 wrote to memory of 2712	2284	JaffaCakes118_74ce5b017a38597f7f82f49d108eb747.exe	28
PID 2284 wrote to memory of 2712	2284	JaffaCakes118_74ce5b017a38597f7f82f49d108eb747.exe	28
PID 2284 wrote to memory of 1800	2284	JaffaCakes118_74ce5b017a38597f7f82f49d108eb747.exe	30
PID 2284 wrote to memory of 1800	2284	JaffaCakes118_74ce5b017a38597f7f82f49d108eb747.exe	30
PID 2284 wrote to memory of 1800	2284	JaffaCakes118_74ce5b017a38597f7f82f49d108eb747.exe	30
PID 2284 wrote to memory of 1800	2284	JaffaCakes118_74ce5b017a38597f7f82f49d108eb747.exe	30

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_74ce5b017a38597f7f82f49d108eb747.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_74ce5b017a38597f7f82f49d108eb747.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2284
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_74ce5b017a38597f7f82f49d108eb747.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_74ce5b017a38597f7f82f49d108eb747.exe startC:\Program Files (x86)\LP\327E\D5E.exe%C:\Program Files (x86)\LP\327E
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2712
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_74ce5b017a38597f7f82f49d108eb747.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_74ce5b017a38597f7f82f49d108eb747.exe startC:\Program Files (x86)\1C87D\lvvm.exe%C:\Program Files (x86)\1C87D
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1800

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\E251C\C87D.251

Filesize
1KB

MD5
ad29fb2f90300dec086e5a285c3add41

SHA1
5307850da5fcbaf0efd6f97826efa80f734da180

SHA256
0e8709369726b6959420551ab8db281dba205d78f6feeaca8385609b683099e3

SHA512
9da6f2486181f6696d2188fa23767ae9790960c206b94325091b8dae140b5c3638f901aa0de15760f4d07ce14b091c70986c0bd0c93004ae15ba18844fe08d75

Download Submit
C:\Users\Admin\AppData\Roaming\E251C\C87D.251

Filesize
897B

MD5
08f6dfc3689fa64b561735b54b7d2967

SHA1
147dc4630baa5fd8a25db1e3bf9faf151d9754a2

SHA256
a057d3da88e0a1ddb357004d4fe8157dc73d59bd498eeb4e43d5fa89ba4d8a8e

SHA512
60bd19f8f9c92c32d8febd3aba987e0d084838534b5d10ad8b5e22fc6c331b60b691820ed9e05439472687f754aded82224839b45ac25e914d5b44ebcd67e580

Download Submit
C:\Users\Admin\AppData\Roaming\E251C\C87D.251

Filesize
1KB

MD5
a078ae8243263c905491e98c42f9d352

SHA1
2fdbd7466bd8f38c9a0216b1b4cdea553a0420c5

SHA256
6a051aa0a73816f35e7bd8a21f6e08bd8b4434454a8024dfb8b0cb58d879c131

SHA512
582aca72feec9a5e20761f596cef6bcac8c39a665375c85e95a40e4539230afd6cff27fb085a3b8162b770a3924f68087a7c0432931ca6c8801bb2117c4e1d80

Download Submit
C:\Users\Admin\AppData\Roaming\E251C\C87D.251

Filesize
597B

MD5
0e92a6ef92c12e00718ebc96858c00bf

SHA1
b180fbf5bf02a66bc9850832731c89a681bc896f

SHA256
9079874df00cbf91476e62bf8a1233abeb6275017df99b59a345b4e45502d110

SHA512
ef049715c0f413005be0389fefc0a90c58f67220816aac54cd53116ca9abc2392a44d7d059be487aed60e8606ae072d2d3b04428dc5101a1e7ef1ec6ea772979

Download Submit
memory/1800-132-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2284-0-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2284-18-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2284-133-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2284-303-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2712-17-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads