cycbot | f56c042448a70e86c30519d880cbd0701ecf19968c32529bbb3fe3ac0b8a85da

General

Target

JaffaCakes118_73534d26ab40ee356ec097a7b04e5f93.exe
Size

199KB
MD5

73534d26ab40ee356ec097a7b04e5f93
SHA1

33f1322c9cd474ae8cde7873418597ef58d036dc
SHA256

f56c042448a70e86c30519d880cbd0701ecf19968c32529bbb3fe3ac0b8a85da
SHA512

9ece9a0c2b7662be956ea94a21693f9963ddf27d949494d00c3edfa3ea3120097cbc14034019fc006e09ebbdc94e2125715762ee3856fe11448ae444c3811d76
SSDEEP

6144:wm2ucc2DmJq3jCEi5ojBZNoYsZazj0tsl:waV2DoeViujdofa8Wl

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/2892-13-0x0000000000400000-0x000000000046D000-memory.dmp	family_cycbot
behavioral1/memory/2808-15-0x0000000000400000-0x000000000046D000-memory.dmp	family_cycbot
behavioral1/memory/2232-77-0x0000000000400000-0x000000000046D000-memory.dmp	family_cycbot
behavioral1/memory/2808-78-0x0000000000400000-0x000000000046D000-memory.dmp	family_cycbot
behavioral1/memory/2808-181-0x0000000000400000-0x000000000046D000-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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_73534d26ab40ee356ec097a7b04e5f93.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 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2808-2-0x0000000000400000-0x000000000046D000-memory.dmp	upx
behavioral1/memory/2892-13-0x0000000000400000-0x000000000046D000-memory.dmp	upx
behavioral1/memory/2892-12-0x0000000000400000-0x000000000046D000-memory.dmp	upx
behavioral1/memory/2808-15-0x0000000000400000-0x000000000046D000-memory.dmp	upx
behavioral1/memory/2232-75-0x0000000000400000-0x000000000046D000-memory.dmp	upx
behavioral1/memory/2232-77-0x0000000000400000-0x000000000046D000-memory.dmp	upx
behavioral1/memory/2808-78-0x0000000000400000-0x000000000046D000-memory.dmp	upx
behavioral1/memory/2808-181-0x0000000000400000-0x000000000046D000-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_73534d26ab40ee356ec097a7b04e5f93.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_73534d26ab40ee356ec097a7b04e5f93.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_73534d26ab40ee356ec097a7b04e5f93.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2808 wrote to memory of 2892	2808	JaffaCakes118_73534d26ab40ee356ec097a7b04e5f93.exe	30
PID 2808 wrote to memory of 2892	2808	JaffaCakes118_73534d26ab40ee356ec097a7b04e5f93.exe	30
PID 2808 wrote to memory of 2892	2808	JaffaCakes118_73534d26ab40ee356ec097a7b04e5f93.exe	30
PID 2808 wrote to memory of 2892	2808	JaffaCakes118_73534d26ab40ee356ec097a7b04e5f93.exe	30
PID 2808 wrote to memory of 2232	2808	JaffaCakes118_73534d26ab40ee356ec097a7b04e5f93.exe	32
PID 2808 wrote to memory of 2232	2808	JaffaCakes118_73534d26ab40ee356ec097a7b04e5f93.exe	32
PID 2808 wrote to memory of 2232	2808	JaffaCakes118_73534d26ab40ee356ec097a7b04e5f93.exe	32
PID 2808 wrote to memory of 2232	2808	JaffaCakes118_73534d26ab40ee356ec097a7b04e5f93.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_73534d26ab40ee356ec097a7b04e5f93.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_73534d26ab40ee356ec097a7b04e5f93.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2808
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_73534d26ab40ee356ec097a7b04e5f93.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_73534d26ab40ee356ec097a7b04e5f93.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2892
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_73534d26ab40ee356ec097a7b04e5f93.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_73534d26ab40ee356ec097a7b04e5f93.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2232

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\C048.F23

Filesize
1KB

MD5
b2bd3b153cf11a33fd178c58d725204f

SHA1
7a2e94afad1f4f944bfff370579fa36107c7406e

SHA256
a6fff08073588d8f2f52b9ce84397db170a8db90647c1bac870919ab8fac6bf1

SHA512
37e62fba153dbf1a4a60126f477723e7bf630b91196a9a55aef922103cf7192068a6e3de35b7798ba12918397ecd0eb349d14544bd0e07a89f5f1d0c217abf99

Download Submit
C:\Users\Admin\AppData\Roaming\C048.F23

Filesize
600B

MD5
2608ebaa777b674a5d9b52beac2a0428

SHA1
742326a145d80ac832b207062232b45138d9ce85

SHA256
690154461e45e26b067809b196152759d63c1d092ed6eb312a7745c3f68c3c75

SHA512
5a48e6bf7c99ff648c13c7e1532ca31b72967a661bc35b984b76c5719741a717aac354feb428fccd0b894e496d012f483461dc58bb047ce3156aa53b41d67530

Download Submit
C:\Users\Admin\AppData\Roaming\C048.F23

Filesize
996B

MD5
0574c5ae64d45a4bee5d388caefa4e05

SHA1
ee344c5ace2c7df042cf226beb20ef0278f4e2dc

SHA256
c249995723d755e5134ba76c0144677fe1ee9ce7907418dd487083a12fd17984

SHA512
1f53e031271342d957e202e30e007699b44792f37d31bf2ef7878b0a4068cf722da99da9947e1095d01a54f2e709e4119c419792d211e494954c6e06dff43f76

Download Submit
memory/2232-74-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2232-77-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2232-75-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2808-78-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2808-15-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2808-1-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2808-2-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2808-181-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2892-12-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2892-13-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads