cycbot | 71d27aeddb1fb19fc99bb1c0e116fc71bde13a8d6ef108e165a2fb7c83a62cf9

General

Target

JaffaCakes118_4d0178ef0fb77976b1e307e2f0248086.exe
Size

176KB
MD5

4d0178ef0fb77976b1e307e2f0248086
SHA1

55e589ce232b74cef4d9cf17810b785af071140c
SHA256

71d27aeddb1fb19fc99bb1c0e116fc71bde13a8d6ef108e165a2fb7c83a62cf9
SHA512

12a3fbcf97182d4bf347652105561973bebea5d9ce99e9056d2ba327ec9497ccfc30cfc7f90db2e4a22c29dd6d7355471dbe1ca6b924c5f129ba6f9fa64d0553
SSDEEP

3072:Ih2uSGyG0clIGwsVr8WJ/jwmNnV9T8cLuOwJfyTlkYD59yfG6a:IhpSHYlJ5fcQSHOgfyhkYDHwGz

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/2924-13-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral2/memory/2904-14-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral2/memory/2904-82-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral2/memory/4972-86-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral2/memory/2904-194-0x0000000000400000-0x000000000046E000-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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_4d0178ef0fb77976b1e307e2f0248086.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2904-2-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/2924-13-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/2904-14-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/2904-82-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/4972-85-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/4972-86-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/2904-194-0x0000000000400000-0x000000000046E000-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	JaffaCakes118_4d0178ef0fb77976b1e307e2f0248086.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4d0178ef0fb77976b1e307e2f0248086.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4d0178ef0fb77976b1e307e2f0248086.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2904 wrote to memory of 2924	2904	JaffaCakes118_4d0178ef0fb77976b1e307e2f0248086.exe	83
PID 2904 wrote to memory of 2924	2904	JaffaCakes118_4d0178ef0fb77976b1e307e2f0248086.exe	83
PID 2904 wrote to memory of 2924	2904	JaffaCakes118_4d0178ef0fb77976b1e307e2f0248086.exe	83
PID 2904 wrote to memory of 4972	2904	JaffaCakes118_4d0178ef0fb77976b1e307e2f0248086.exe	91
PID 2904 wrote to memory of 4972	2904	JaffaCakes118_4d0178ef0fb77976b1e307e2f0248086.exe	91
PID 2904 wrote to memory of 4972	2904	JaffaCakes118_4d0178ef0fb77976b1e307e2f0248086.exe	91

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4d0178ef0fb77976b1e307e2f0248086.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4d0178ef0fb77976b1e307e2f0248086.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2904
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4d0178ef0fb77976b1e307e2f0248086.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4d0178ef0fb77976b1e307e2f0248086.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2924
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4d0178ef0fb77976b1e307e2f0248086.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4d0178ef0fb77976b1e307e2f0248086.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4972

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

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Downloads

C:\Users\Admin\AppData\Roaming\4F0A.014

Filesize
1KB

MD5
e6a9dbc3d8167e0521f48b3ea0646835

SHA1
28f18ca81bbf1f0f99c1aa27d3b4f608a5df069a

SHA256
ebf2de4f0149fd93bf80fe980fc11cd73a4d61fdd4f3f0a00effdd32c8e5335f

SHA512
9315b4a8e84f0a65cee63f2796b3250b82145ce05274523b7551559c69a0786c93e108c7bf29b320486dc363fc32c7bafd1164c057b962cc05e530758bfb8b29

Download Submit
C:\Users\Admin\AppData\Roaming\4F0A.014

Filesize
600B

MD5
bc1a0e0a4dbdff249d62151864ac1057

SHA1
dfdbbfaf55c0980db8ef29f7c57caede92f05019

SHA256
1337c96287d697f4fc45ef12cf7fe2c393de06deec1f684ac25cddf308a61578

SHA512
bc3d47d7df12fa27434acbdf9586a1632d046576c9749b5c6ba1a6ba25018d7f11111ad1d7bb6974edde463487ee47fa3c428ef3375305a23446d076ba647054

Download Submit
C:\Users\Admin\AppData\Roaming\4F0A.014

Filesize
996B

MD5
5dea2e0c752c27286a82e6859336d03a

SHA1
28cb960c08bfddb80a530d16e76a0951295a81a0

SHA256
447739e80f34b9afc16bebf648258dc17fc67d3fe8c9affa41f544662c48eb1b

SHA512
04276a5dbddf32a5a58b3d41d04ceb7e5edae161f1559d76196442e5647a58ff88792c571af429da72da24790a48d4897410213c457d6d4dcc1d33a2a7fc344a

Download Submit
memory/2904-1-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2904-2-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2904-14-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2904-82-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2904-194-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2924-13-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4972-85-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4972-84-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4972-86-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads