cycbot | 17c875fb6b85948075d5be4f6f887780fd1a28d901174b3a96a43bd478f2b738

General

Target

JaffaCakes118_3b29383007fb7037bab2fdd8fa9e34e5.exe
Size

169KB
MD5

3b29383007fb7037bab2fdd8fa9e34e5
SHA1

01ff35d931c930fdad49f5d1057ed4bf36905744
SHA256

17c875fb6b85948075d5be4f6f887780fd1a28d901174b3a96a43bd478f2b738
SHA512

42ee6c866a609869c01682e17b221de5a3968e37ad0fa80afa202aa3bff6184227d07424993536b257a44c5b6736fcff11253f87bfb32ddaea9e8e5c7df574f1
SSDEEP

3072:LQ9X812u2T/BjSkLKlkyHtzuRe4xvkrBlOCkGacw2bIQ1yDGb3VAFBnpurFrNgm4:LQIEjSOe6RIWCkGx0D63uF5EZBZPiqCD

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/2300-15-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2688-16-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2688-17-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2688-80-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/284-83-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2688-180-0x0000000000400000-0x0000000000490000-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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\49017\\94FC8.exe"	JaffaCakes118_3b29383007fb7037bab2fdd8fa9e34e5.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/2688-2-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2300-15-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2300-14-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2688-16-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2688-17-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2688-80-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/284-82-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/284-83-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2688-180-0x0000000000400000-0x0000000000490000-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_3b29383007fb7037bab2fdd8fa9e34e5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_3b29383007fb7037bab2fdd8fa9e34e5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_3b29383007fb7037bab2fdd8fa9e34e5.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2688 wrote to memory of 2300	2688	JaffaCakes118_3b29383007fb7037bab2fdd8fa9e34e5.exe	30
PID 2688 wrote to memory of 2300	2688	JaffaCakes118_3b29383007fb7037bab2fdd8fa9e34e5.exe	30
PID 2688 wrote to memory of 2300	2688	JaffaCakes118_3b29383007fb7037bab2fdd8fa9e34e5.exe	30
PID 2688 wrote to memory of 2300	2688	JaffaCakes118_3b29383007fb7037bab2fdd8fa9e34e5.exe	30
PID 2688 wrote to memory of 284	2688	JaffaCakes118_3b29383007fb7037bab2fdd8fa9e34e5.exe	32
PID 2688 wrote to memory of 284	2688	JaffaCakes118_3b29383007fb7037bab2fdd8fa9e34e5.exe	32
PID 2688 wrote to memory of 284	2688	JaffaCakes118_3b29383007fb7037bab2fdd8fa9e34e5.exe	32
PID 2688 wrote to memory of 284	2688	JaffaCakes118_3b29383007fb7037bab2fdd8fa9e34e5.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3b29383007fb7037bab2fdd8fa9e34e5.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3b29383007fb7037bab2fdd8fa9e34e5.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2688
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3b29383007fb7037bab2fdd8fa9e34e5.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3b29383007fb7037bab2fdd8fa9e34e5.exe startC:\Program Files (x86)\LP\C884\747.exe%C:\Program Files (x86)\LP\C884
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2300
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3b29383007fb7037bab2fdd8fa9e34e5.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3b29383007fb7037bab2fdd8fa9e34e5.exe startC:\Program Files (x86)\17005\lvvm.exe%C:\Program Files (x86)\17005
  2⤵
  - System Location Discovery: System Language Discovery
  PID:284

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\49017\7005.901

Filesize
1KB

MD5
e9bbded12b31e7dfc661968d3b891d20

SHA1
2cf4e6720e5d7395f79cc2dc5fd00e539c5e9a2d

SHA256
c1979c471c760d7247a6dd5ce28c08198dbca80e53e30280154f614f1bcebd4c

SHA512
4db1994f684327d632c71888bc2e9e1a34c3552e00d9eeb6448003cd43f7d673c128180c5953394e18a2a345ee95cb30d2ed82ab231bf7858dbf49cd7e4191c3

Download Submit
C:\Users\Admin\AppData\Roaming\49017\7005.901

Filesize
600B

MD5
94544c2d5309f3688a4ea2408c625d13

SHA1
2939a81b2588d43507b5fc2953de7a0d02e2d86b

SHA256
912d33dbd9447626a65d288f9b5a6b1853b38eff15666b9ec84be1ab5bde3a91

SHA512
b50f89e7b5a530be146e1f0f20aaaa72aa0bfff85598c19d173541a6800c193da5bd600517a6802159d2de9d29e5e35a72bbda01c5bf3dc96675482f946803d9

Download Submit
C:\Users\Admin\AppData\Roaming\49017\7005.901

Filesize
996B

MD5
d1e629eb150fb913aab92120a126b574

SHA1
afc05406850c9ed54de56b10a05a7cfef5de8676

SHA256
5c47c2ecf966cd3e57a3d8855e4bccbfe41b6a7b21a873f299a5248ef4e2a448

SHA512
36609a6891bbb9097c1abd772e93fcc7d57b0202385306d333a7f4c30d2df4c4839b095b25f943d27d5825fa48165c1055e57f529dca2d8d2870e26a1cd4d4a3

Download Submit
memory/284-83-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/284-82-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2300-15-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2300-14-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2300-12-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2688-17-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2688-16-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2688-80-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2688-1-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2688-2-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2688-180-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads