cycbot | 287d4f67c26fa2c2d37949fd3b808c66a42ce76b869c3921f92e97cc7ab5d8fc

General

Target

JaffaCakes118_a8f715e805029fd9960ba55c371e6283.exe
Size

165KB
MD5

a8f715e805029fd9960ba55c371e6283
SHA1

bdde5b4efdfa86fc0d203b89a3025917feb5fe31
SHA256

287d4f67c26fa2c2d37949fd3b808c66a42ce76b869c3921f92e97cc7ab5d8fc
SHA512

6d34ec5a5060096ae47948fcc5eae4334e0792bfb1044d622c29ce9127d366e1ca81891d5c4045858e07f8d868172ab2db9c6f757032ce1aedafcc4e2c4c15bb
SSDEEP

3072:etywFfbydLv0hX4L2zHzlhnNbFisqIylmOO0H6U7bXjuh+mXH7LU2RQ6+C/QgJK:etIQo6zHxhntX3OOY6UehdHXqIVJK

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/2256-16-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1996-17-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1996-18-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/596-119-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/596-118-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1996-120-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1996-286-0x0000000000400000-0x0000000000491000-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\\5DD18\\733A5.exe"	JaffaCakes118_a8f715e805029fd9960ba55c371e6283.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/1996-3-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2256-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2256-16-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1996-17-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1996-18-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/596-119-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/596-118-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1996-120-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1996-286-0x0000000000400000-0x0000000000491000-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_a8f715e805029fd9960ba55c371e6283.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a8f715e805029fd9960ba55c371e6283.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a8f715e805029fd9960ba55c371e6283.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1996 wrote to memory of 2256	1996	JaffaCakes118_a8f715e805029fd9960ba55c371e6283.exe	30
PID 1996 wrote to memory of 2256	1996	JaffaCakes118_a8f715e805029fd9960ba55c371e6283.exe	30
PID 1996 wrote to memory of 2256	1996	JaffaCakes118_a8f715e805029fd9960ba55c371e6283.exe	30
PID 1996 wrote to memory of 2256	1996	JaffaCakes118_a8f715e805029fd9960ba55c371e6283.exe	30
PID 1996 wrote to memory of 596	1996	JaffaCakes118_a8f715e805029fd9960ba55c371e6283.exe	33
PID 1996 wrote to memory of 596	1996	JaffaCakes118_a8f715e805029fd9960ba55c371e6283.exe	33
PID 1996 wrote to memory of 596	1996	JaffaCakes118_a8f715e805029fd9960ba55c371e6283.exe	33
PID 1996 wrote to memory of 596	1996	JaffaCakes118_a8f715e805029fd9960ba55c371e6283.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8f715e805029fd9960ba55c371e6283.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8f715e805029fd9960ba55c371e6283.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1996
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8f715e805029fd9960ba55c371e6283.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8f715e805029fd9960ba55c371e6283.exe startC:\Program Files (x86)\LP\A505\533.exe%C:\Program Files (x86)\LP\A505
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2256
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8f715e805029fd9960ba55c371e6283.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8f715e805029fd9960ba55c371e6283.exe startC:\Program Files (x86)\1816C\lvvm.exe%C:\Program Files (x86)\1816C
  2⤵
  - System Location Discovery: System Language Discovery
  PID:596

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\5DD18\816C.DD1

Filesize
996B

MD5
5fa4d09833b0a7a2394c4653b51712d0

SHA1
804b28380908764062a2bf8c6b7b532c5cb09fea

SHA256
6823a95b48d7929b6bdc33fac6ebb5943768fcb36b37f31a83d88588a9399177

SHA512
67973377fd1904394f62d51dabc312748661328b709cbbac583c2af270c63673f78f3229d9a507141075c3c735dfd458dbf93480f90ae92c081012290ef35947

Download Submit
C:\Users\Admin\AppData\Roaming\5DD18\816C.DD1

Filesize
600B

MD5
ee50ff03698d4c46e0262eed3748f284

SHA1
ec535b36dc162e81a2f28aa9bbb1d687a0e7f24d

SHA256
90406366b1db52bcfe47759d168d23f00d501906a89ed3d41f65fa85fd0ad954

SHA512
c513ab87a782966eb9d0658e12c1fcb986a635c719ce2413528fe99ebb0a030979697c6c9d960fd71761e559ee53e53eedff0470f9f44d67c2ec8991cdd509a7

Download Submit
C:\Users\Admin\AppData\Roaming\5DD18\816C.DD1

Filesize
1KB

MD5
ab2b0f624ee65f9fa7c45ac6a1fe35b8

SHA1
b9f6b2835a60eff379acb2bb20b69868c9c814b7

SHA256
0e7797b1ae553505037514fc2c9e1caf791858ea9b9512d1232eaeb56c3bc189

SHA512
70bdb61e56a2df512554fe51fa728745137cd1ada07636dfebfa772dc1624efe530dda352165f456a6f6bcc41fd6c9b0862ddc7a66995e91475b8452e3450007

Download Submit
memory/596-118-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/596-119-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/596-116-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1996-18-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1996-0-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1996-17-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1996-120-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1996-3-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1996-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1996-286-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2256-16-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2256-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads