cycbot | 8101e389c966ad926e94236a078b4486cd4ea3888c1fcc0dbbc2289410d10eb6

General

Target

JaffaCakes118_6db8c29690fdf3382220bc004955d31c.exe
Size

166KB
MD5

6db8c29690fdf3382220bc004955d31c
SHA1

778b2f6706ada616f688e3c4650c1419d487a113
SHA256

8101e389c966ad926e94236a078b4486cd4ea3888c1fcc0dbbc2289410d10eb6
SHA512

197b61a2506749a154f640fa30ddc162b13a47db30a8f8302bd9713d1fb27d71e011a3a2f44df3657d34cfc01b3209967047e0c6a055976808cb26a69dfdcecc
SSDEEP

3072:uGViOCChCNwI2yF8HcEaOQLDxP2qaQaVY4jglLsyfdkBNFMOGOwCv++q4Q:uKCChCNwPOBEa1LJiNYrLBdJOGC+zB

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 6 IoCs

Cycbot is a backdoor and trojan written in C++.

resource	yara_rule
behavioral1/memory/2528-16-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2500-17-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2500-18-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2820-131-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2500-132-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2500-302-0x0000000000400000-0x0000000000490000-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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\0F9D1\\DC526.exe"	JaffaCakes118_6db8c29690fdf3382220bc004955d31c.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 9 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2500-3-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2528-14-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2528-16-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2500-17-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2500-18-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2820-131-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2820-129-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2500-132-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2500-302-0x0000000000400000-0x0000000000490000-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_6db8c29690fdf3382220bc004955d31c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6db8c29690fdf3382220bc004955d31c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6db8c29690fdf3382220bc004955d31c.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2500 wrote to memory of 2528	2500	JaffaCakes118_6db8c29690fdf3382220bc004955d31c.exe	31
PID 2500 wrote to memory of 2528	2500	JaffaCakes118_6db8c29690fdf3382220bc004955d31c.exe	31
PID 2500 wrote to memory of 2528	2500	JaffaCakes118_6db8c29690fdf3382220bc004955d31c.exe	31
PID 2500 wrote to memory of 2528	2500	JaffaCakes118_6db8c29690fdf3382220bc004955d31c.exe	31
PID 2500 wrote to memory of 2820	2500	JaffaCakes118_6db8c29690fdf3382220bc004955d31c.exe	33
PID 2500 wrote to memory of 2820	2500	JaffaCakes118_6db8c29690fdf3382220bc004955d31c.exe	33
PID 2500 wrote to memory of 2820	2500	JaffaCakes118_6db8c29690fdf3382220bc004955d31c.exe	33
PID 2500 wrote to memory of 2820	2500	JaffaCakes118_6db8c29690fdf3382220bc004955d31c.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6db8c29690fdf3382220bc004955d31c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6db8c29690fdf3382220bc004955d31c.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2500
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6db8c29690fdf3382220bc004955d31c.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6db8c29690fdf3382220bc004955d31c.exe startC:\Program Files (x86)\LP\26F0\C98.exe%C:\Program Files (x86)\LP\26F0
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2528
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6db8c29690fdf3382220bc004955d31c.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6db8c29690fdf3382220bc004955d31c.exe startC:\Program Files (x86)\D11BE\lvvm.exe%C:\Program Files (x86)\D11BE
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2820

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\0F9D1\11BE.F9D

Filesize
996B

MD5
9de5ce02b5e3386bd89e6109930f96af

SHA1
d81e7a0263362ac63463d9865a5fcf8f84fced8f

SHA256
f83f51abb8147b2959b4a481f013cd82df3cebe902c1e80be3ae7f53f1493517

SHA512
8ce2eda2db2451b11fa63de7554477a6fa9a3a4a1094af794278d7e6c56fc7758403967da0ec07f29bdfdbc982adb4bd1860e13171ec3e41c95640d543630721

Download Submit
C:\Users\Admin\AppData\Roaming\0F9D1\11BE.F9D

Filesize
600B

MD5
40f0779431118657e7e220aad3a8a370

SHA1
13d6ce93cd97b25164ab1cb14d6307a7d0dcb04b

SHA256
d64252bace81ef272fa7a28535c0ea574d5ebdf61952a99c32d33084b7e0afd8

SHA512
c15e68c84e6602971a0cc669cf98fd28ba782e0cec3261cad78dae0fcba2a2ed8b42af175f91f6f0772ebbc1fdbc56f5ecc74869efc70c62107b401fd7594e1f

Download Submit
C:\Users\Admin\AppData\Roaming\0F9D1\11BE.F9D

Filesize
1KB

MD5
7f0a0a847e75def7162ff76c596a64c8

SHA1
1e0927f9db1ae6530448a2da457ee074d10da529

SHA256
61e70bb01b8b34f7ec37347ac263316eb2288bcb3107bc4cfea55d03d7b74ede

SHA512
6003e5bd4c7c81a72dcadb194cc367911444f16d9018b3e2e533427140e2fa28be401ad9b6bbbccbf667000fc6940433221b7454b91dc96f41c4e86d32679808

Download Submit
memory/2500-132-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2500-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2500-3-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2500-0-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2500-302-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2500-17-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2500-18-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2528-14-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2528-16-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2820-129-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2820-131-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2820-128-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads