cycbot | e9c4eb8d6852effc2d532045026c8919985e0c4952cfb6031b2576e9fb38523b

General

Target

9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe
Size

181KB
MD5

9071898241ee80dc0e52c7d81b0624c9
SHA1

b81cf0a4301253c2479da43ce7f8d7a31694da7b
SHA256

e9c4eb8d6852effc2d532045026c8919985e0c4952cfb6031b2576e9fb38523b
SHA512

35fd277b1c4066624a67dc8c5ca32dd27e05e809ac041f387f7ccbf660243f1634f574cd1cd31d1c643e0b6a591781c66d71f3efb3895285f886281b50398cf2
SSDEEP

3072:aDc3QjJdZq6PQQIjlUEWF6jxVSEAmnp8jRzc/vqB/y17MNyuuYm:acgj4iUH86jJp8jVc/vq4DuuV

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/1612-13-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2500-15-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2500-71-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2696-74-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2500-183-0x0000000000400000-0x000000000046E000-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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	9071898241ee80dc0e52c7d81b0624c9_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 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2500-2-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1612-13-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2500-15-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2500-71-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2696-73-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2696-74-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2500-183-0x0000000000400000-0x000000000046E000-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	9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2500 wrote to memory of 1612	2500	9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe	30
PID 2500 wrote to memory of 1612	2500	9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe	30
PID 2500 wrote to memory of 1612	2500	9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe	30
PID 2500 wrote to memory of 1612	2500	9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe	30
PID 2500 wrote to memory of 2696	2500	9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe	33
PID 2500 wrote to memory of 2696	2500	9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe	33
PID 2500 wrote to memory of 2696	2500	9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe	33
PID 2500 wrote to memory of 2696	2500	9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2500
- C:\Users\Admin\AppData\Local\Temp\9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1612
- C:\Users\Admin\AppData\Local\Temp\9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2696

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\C9BC.6C5

Filesize
600B

MD5
9f399334b9f5c916a863f045cee0a0b0

SHA1
0beae9a7a497523f3fc68746d23788c120b0e405

SHA256
14120feba4ae7b5c301210e7c75e59af6ed84b9df7da1f583bf4625bed520ac1

SHA512
d26012a3cd3ff087c0d8d54e0e7efa0923f3abbd157fd594f7b8c80ae4e96095d343b2f6309eacb2b7b4bcd8f90e333182aedeb6b4dd9b7a58b7871aaa78fd3b

Download Submit
C:\Users\Admin\AppData\Roaming\C9BC.6C5

Filesize
996B

MD5
169522d07306fa3f15e3a5929167008b

SHA1
9bc549582b9139ca2599c3992b11f7b85acff344

SHA256
3c23bebaaaad691db41a8a09f6054379134525beba39e047005d9aa2c013de86

SHA512
f1ee5d57f3840b576949751a4dd7de6fcdb315c8d0354f5a5b64605beafc84f5d988ce8fdcdbd7afffe8a6ac6648e124745dcfe19754e68ef3b34b7538605d19

Download Submit
memory/1612-14-0x000000000068B000-0x00000000006A5000-memory.dmp

Filesize
104KB

Download
memory/1612-13-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1612-11-0x0000000000640000-0x0000000000740000-memory.dmp

Filesize
1024KB

Download
memory/2500-1-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2500-2-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2500-15-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2500-71-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2500-183-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2696-73-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2696-74-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads