cycbot | 9d8e49259ce0ace0dff60387ab055fe3772b19291fa7ba3c98f338c508cf5f2b

General

Target

e90179cfb1120be4f3ade5c2c5578a77_JaffaCakes118.exe
Size

193KB
MD5

e90179cfb1120be4f3ade5c2c5578a77
SHA1

0b3d7ca0656d915dc3debc5b5b3df45913d7f56a
SHA256

9d8e49259ce0ace0dff60387ab055fe3772b19291fa7ba3c98f338c508cf5f2b
SHA512

930652d54554e9b5765140ba7af76352759d5fe3be9408a8fab1050e263ebec003f38d8641fc1114da80633e70f060b42381cb17cf7565df52ae024662b72066
SSDEEP

6144:V3iMVHKa9HNwa51sxAEfA4mg/q+TDpXF9JI+M:PhEabIAmmg/rpvq+

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/1212-14-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral1/memory/2548-15-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral1/memory/2548-83-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral1/memory/844-87-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral1/memory/2548-205-0x0000000000400000-0x0000000000470000-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\\dwm.exe"	e90179cfb1120be4f3ade5c2c5578a77_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/2548-2-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/1212-14-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/2548-15-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/2548-83-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/844-85-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/844-87-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/2548-205-0x0000000000400000-0x0000000000470000-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	e90179cfb1120be4f3ade5c2c5578a77_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2548 wrote to memory of 1212	2548	e90179cfb1120be4f3ade5c2c5578a77_JaffaCakes118.exe	30
PID 2548 wrote to memory of 1212	2548	e90179cfb1120be4f3ade5c2c5578a77_JaffaCakes118.exe	30
PID 2548 wrote to memory of 1212	2548	e90179cfb1120be4f3ade5c2c5578a77_JaffaCakes118.exe	30
PID 2548 wrote to memory of 1212	2548	e90179cfb1120be4f3ade5c2c5578a77_JaffaCakes118.exe	30
PID 2548 wrote to memory of 844	2548	e90179cfb1120be4f3ade5c2c5578a77_JaffaCakes118.exe	33
PID 2548 wrote to memory of 844	2548	e90179cfb1120be4f3ade5c2c5578a77_JaffaCakes118.exe	33
PID 2548 wrote to memory of 844	2548	e90179cfb1120be4f3ade5c2c5578a77_JaffaCakes118.exe	33
PID 2548 wrote to memory of 844	2548	e90179cfb1120be4f3ade5c2c5578a77_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\e90179cfb1120be4f3ade5c2c5578a77_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e90179cfb1120be4f3ade5c2c5578a77_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2548
- C:\Users\Admin\AppData\Local\Temp\e90179cfb1120be4f3ade5c2c5578a77_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e90179cfb1120be4f3ade5c2c5578a77_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  PID:1212
- C:\Users\Admin\AppData\Local\Temp\e90179cfb1120be4f3ade5c2c5578a77_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e90179cfb1120be4f3ade5c2c5578a77_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  PID:844

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\F036.DFA

Filesize
600B

MD5
14f8b3e40a99f29b0e74f12081d4f663

SHA1
25d2f236b2a7358cafd677357b9a8f41140bd267

SHA256
a26a7c23e7dbdee71635c3f169b0df115fb5eac1b620150b3871445452c03121

SHA512
ba0187023b99022b38119f5545ef4bf351f1d1ab1bbdd14b4d6cc5dbb874bd18a3c75544068f19bd83a45f5100cab770913a1a9ca2d0b5d7625fe0d127f3d897

Download Submit
C:\Users\Admin\AppData\Roaming\F036.DFA

Filesize
1KB

MD5
b7320f1925411e2d29a7797582eb8d8d

SHA1
e7331ccef4574cbfd3ddc30ec31114a930ec8b19

SHA256
5c5fcd4d5b255eb81ca59a963c499157ead65de0d5f2728fd89ef9b0b1ce8a8b

SHA512
2307748e9b7ced799aa1b360b599b09dedc65118e16047884fad176e5924a9a66f5b63ad3105ea12990d6696e7b6e3e6648817092b3939841c353bbcd4363173

Download Submit
C:\Users\Admin\AppData\Roaming\F036.DFA

Filesize
996B

MD5
934c6b51e475fd740b51b12fdef99d1e

SHA1
270cca56dfe9f066ee8a74ca98f28c9374a87e55

SHA256
c0577bca4f82cef48f6ee58bd1ad4b16f412da71aa4e8ada3f32504cf1ba180a

SHA512
71b82def522fc3392a03cd86d3e6ea0fac18fd6d758530ab7333a372fd08474439a351cca93eee33a88405261a48c2659d1a0a6c42cef0807f0e3974d62bfe8b

Download Submit
memory/844-85-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/844-87-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1212-14-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1212-12-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2548-1-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2548-2-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2548-15-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2548-83-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2548-205-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads