cycbot | adbdb8436b47f907de5bbc6aa0cecd0d69ecb7ad1049b41aeb0b5e49d3af2c4e

General

Target

JaffaCakes118_3195e5c0a2481f5b4ebddd7d2044f66e.exe
Size

182KB
MD5

3195e5c0a2481f5b4ebddd7d2044f66e
SHA1

f4b63ea4be71d6384fdf1b5c5e17a6ed706ae841
SHA256

adbdb8436b47f907de5bbc6aa0cecd0d69ecb7ad1049b41aeb0b5e49d3af2c4e
SHA512

de6769f09ec4c6e568c70527c73767a83dc983a740f60d22f95d23b5103c5fb5154e24e3871c4bc46717278050800d66a72ea8b9ce82f84f36ca3f2de1294a0b
SSDEEP

3072:1h2kPSwsifzeSprPbouzcGhPfqBcG/eIuP/P7vt+2Vw8+GqWPG+rbh8XWVMWPUr:/2kECBrDo2iBAIuTFvVwmqW2KK

Score

10^/10

cycbot backdoor discovery persistence rat 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
behavioral2/memory/2380-13-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/3724-14-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/3724-79-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/2464-84-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/3724-187-0x0000000000400000-0x0000000000490000-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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_3195e5c0a2481f5b4ebddd7d2044f66e.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3724-2-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/2380-12-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/2380-13-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/3724-14-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/3724-79-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/2464-82-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/2464-84-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/3724-187-0x0000000000400000-0x0000000000490000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 1 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_3195e5c0a2481f5b4ebddd7d2044f66e.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3724 wrote to memory of 2380	3724	JaffaCakes118_3195e5c0a2481f5b4ebddd7d2044f66e.exe	85
PID 3724 wrote to memory of 2380	3724	JaffaCakes118_3195e5c0a2481f5b4ebddd7d2044f66e.exe	85
PID 3724 wrote to memory of 2380	3724	JaffaCakes118_3195e5c0a2481f5b4ebddd7d2044f66e.exe	85
PID 3724 wrote to memory of 2464	3724	JaffaCakes118_3195e5c0a2481f5b4ebddd7d2044f66e.exe	96
PID 3724 wrote to memory of 2464	3724	JaffaCakes118_3195e5c0a2481f5b4ebddd7d2044f66e.exe	96
PID 3724 wrote to memory of 2464	3724	JaffaCakes118_3195e5c0a2481f5b4ebddd7d2044f66e.exe	96

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3195e5c0a2481f5b4ebddd7d2044f66e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3195e5c0a2481f5b4ebddd7d2044f66e.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3724
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3195e5c0a2481f5b4ebddd7d2044f66e.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3195e5c0a2481f5b4ebddd7d2044f66e.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  PID:2380
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3195e5c0a2481f5b4ebddd7d2044f66e.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3195e5c0a2481f5b4ebddd7d2044f66e.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  PID:2464

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

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\A6C1.11B

Filesize
1KB

MD5
9d5afebdd03e24386e03d12dde7f084d

SHA1
23979fea00796342083fc3eb16a7bf3cfdf06794

SHA256
04c7a4a86a9c58962fe5d983cf82adb4b2422e0450022bc07ab4e7607501c073

SHA512
27280520e2252da7e9d212145d69bcd63886721b964cc925b2e42e2f4e579a489c498c3b2a1fc97d3229751ab4e2e008d476437c05a721f8e209a750b4ace6e9

Download Submit
C:\Users\Admin\AppData\Roaming\A6C1.11B

Filesize
600B

MD5
f9aed207bc2105346c4725d2462b6c62

SHA1
38569b256942a7751410ccbff3079ea5dc73cf3d

SHA256
973b79dba8b53e42f7509f3c6677c4e8e81106673a669b48ce9000cb55676749

SHA512
9d954f3b00756626f57979cb09feca3abef36f6d637b55471d2108c55e85a90830eecc5eac175eed1236874cca4c403389c8eaa179d1c07881ad889e265eea22

Download Submit
C:\Users\Admin\AppData\Roaming\A6C1.11B

Filesize
996B

MD5
d350e0173af4f2d625208cc7b4db09c5

SHA1
9f2ce1866c57293384607cf944542e7dce2dbc04

SHA256
542258ddf8ce5a41fc57c521c27cb8e5a206039e222ea61777c2c5fe77dff3e8

SHA512
3fc539ac36c92447ba1a41ddb01d3e10ca88bf768b1c2e608d331a7f9cb3deec855686084f925b56ac06f1de2b9177f5bbdc910d885a28a317ffc696e40209ec

Download Submit
memory/2380-12-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2380-13-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2464-84-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2464-82-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2464-81-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3724-79-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3724-1-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3724-14-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3724-2-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3724-187-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads