cycbot | ce959aaf43f946a5a0d14e453ddc6bcded09a78c8102c79e7489a0244c1ef14f

General

Target

JaffaCakes118_41efc86ae0ca44acecee8fe285cf4bd5.exe
Size

180KB
MD5

41efc86ae0ca44acecee8fe285cf4bd5
SHA1

cc564029b0c6e27ca4e1290a85bf31706c13aed7
SHA256

ce959aaf43f946a5a0d14e453ddc6bcded09a78c8102c79e7489a0244c1ef14f
SHA512

a55de82484f06d37b507eb20ac798525ccc072730afa19c52511a043707c7a1ea2331475d8a84ceaab97fd688ff311f570845c640eaf507f8601b790ae35b862
SSDEEP

3072:xreDqSy17OY2ZbZ7hSbPplbSXUDZMPXgUkNVzg2Swjeqbo5XZlKlVUQfkpPH:+jyoYCblhGPrhZGXsFHS0eH7eVfkpP

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 7 IoCs

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

resource	yara_rule
behavioral1/memory/2304-8-0x0000000000400000-0x0000000000485000-memory.dmp	family_cycbot
behavioral1/memory/2304-7-0x0000000000400000-0x0000000000485000-memory.dmp	family_cycbot
behavioral1/memory/1912-15-0x0000000000400000-0x0000000000485000-memory.dmp	family_cycbot
behavioral1/memory/2468-78-0x0000000000400000-0x0000000000485000-memory.dmp	family_cycbot
behavioral1/memory/1912-79-0x0000000000400000-0x0000000000485000-memory.dmp	family_cycbot
behavioral1/memory/1912-168-0x0000000000400000-0x0000000000485000-memory.dmp	family_cycbot
behavioral1/memory/1912-207-0x0000000000400000-0x0000000000485000-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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_41efc86ae0ca44acecee8fe285cf4bd5.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/1912-2-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/2304-8-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/2304-7-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/1912-15-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/2468-77-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/2468-78-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/1912-79-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/1912-168-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/1912-207-0x0000000000400000-0x0000000000485000-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_41efc86ae0ca44acecee8fe285cf4bd5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_41efc86ae0ca44acecee8fe285cf4bd5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_41efc86ae0ca44acecee8fe285cf4bd5.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1912 wrote to memory of 2304	1912	JaffaCakes118_41efc86ae0ca44acecee8fe285cf4bd5.exe	30
PID 1912 wrote to memory of 2304	1912	JaffaCakes118_41efc86ae0ca44acecee8fe285cf4bd5.exe	30
PID 1912 wrote to memory of 2304	1912	JaffaCakes118_41efc86ae0ca44acecee8fe285cf4bd5.exe	30
PID 1912 wrote to memory of 2304	1912	JaffaCakes118_41efc86ae0ca44acecee8fe285cf4bd5.exe	30
PID 1912 wrote to memory of 2468	1912	JaffaCakes118_41efc86ae0ca44acecee8fe285cf4bd5.exe	32
PID 1912 wrote to memory of 2468	1912	JaffaCakes118_41efc86ae0ca44acecee8fe285cf4bd5.exe	32
PID 1912 wrote to memory of 2468	1912	JaffaCakes118_41efc86ae0ca44acecee8fe285cf4bd5.exe	32
PID 1912 wrote to memory of 2468	1912	JaffaCakes118_41efc86ae0ca44acecee8fe285cf4bd5.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41efc86ae0ca44acecee8fe285cf4bd5.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41efc86ae0ca44acecee8fe285cf4bd5.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1912
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41efc86ae0ca44acecee8fe285cf4bd5.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41efc86ae0ca44acecee8fe285cf4bd5.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2304
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41efc86ae0ca44acecee8fe285cf4bd5.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41efc86ae0ca44acecee8fe285cf4bd5.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2468

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\0FA7.D1C

Filesize
1KB

MD5
56b7b339d89c2a71f1dcf9eafc7c510f

SHA1
799c87e5893446e5354084ce103aa996181c40a6

SHA256
2a1c94b355a36b7819d2da1bd1026c0ad3e0ae6d10cdfd21f335042d7d560ffb

SHA512
47edf32247f414054d0de098553d38bbf789e6ba0f2a3ca0c56af3436a4012232aabb6863db941555a275d65478795cbeefc3b37f7b7bffa1925bf75ebac19aa

Download Submit
C:\Users\Admin\AppData\Roaming\0FA7.D1C

Filesize
600B

MD5
f36f3520857fddfd86f65d3c22beb850

SHA1
f2e45daf6cad6a2e4ae8907bbd11be916808cd5f

SHA256
9f74cff29188d9944c17045ba9983be89af6f38e9710d33cdcb5851a26dfc588

SHA512
8862430f9ca0eb454738f016c1f622a833715d62b2ef98e3ffb5530e451b70e726e8e6a521a28ba83480e21439a6a0fb96829a257549b958636d5657f231b969

Download Submit
C:\Users\Admin\AppData\Roaming\0FA7.D1C

Filesize
996B

MD5
ccbe9f35c8b433196071b26e4cd967fb

SHA1
ca9a664d4a546e06b37f103d6e321cd442e2e156

SHA256
641da9fe3a32ace111d93cc20ad80661cf403fced6f6625a73d47e4a7b90443c

SHA512
2712b96e9348476738836132fba376214def618f8e28bdb28bea2fc2d1ab118fe551a6b8d4cfc887a54d9208990e1c7deb9fa82566f08492b26363e9a4d74e2d

Download Submit
memory/1912-79-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/1912-15-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/1912-1-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/1912-2-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/1912-168-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/1912-207-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2304-7-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2304-8-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2304-5-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2468-77-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2468-78-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads