cycbot | e22eeb0c3412f59295fbb4381705bbbfc96fe36e6d121fa38f73460c99df270f

General

Target

JaffaCakes118_48610ac16ade33cf81880524b81bcd60.exe
Size

176KB
MD5

48610ac16ade33cf81880524b81bcd60
SHA1

df055481f165e0ab119facdfe68ea0335f81d706
SHA256

e22eeb0c3412f59295fbb4381705bbbfc96fe36e6d121fa38f73460c99df270f
SHA512

29f36828a0483e7097d6ba92c89975bf11bf06bdec6506dbe87786a6f1bd3977adbdf8bb76943a5cd4dc6dc44554747590d58ee57bd19b271099b9a99aaec2d8
SSDEEP

3072:JCHTWq+uy700dQAkxQlEiVW8daF9BbaTQg76u9otniuBdlXN+BRGH:kTWq+T7ldKOW8U99azSniuBh+bGH

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/2800-6-0x0000000000400000-0x0000000000465000-memory.dmp	family_cycbot
behavioral1/memory/3028-13-0x0000000000400000-0x0000000000465000-memory.dmp	family_cycbot
behavioral1/memory/2524-72-0x0000000000400000-0x0000000000465000-memory.dmp	family_cycbot
behavioral1/memory/3028-73-0x0000000000400000-0x0000000000465000-memory.dmp	family_cycbot
behavioral1/memory/3028-164-0x0000000000400000-0x0000000000465000-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_48610ac16ade33cf81880524b81bcd60.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/3028-2-0x0000000000400000-0x0000000000465000-memory.dmp	upx
behavioral1/memory/2800-6-0x0000000000400000-0x0000000000465000-memory.dmp	upx
behavioral1/memory/3028-13-0x0000000000400000-0x0000000000465000-memory.dmp	upx
behavioral1/memory/2524-71-0x0000000000400000-0x0000000000465000-memory.dmp	upx
behavioral1/memory/2524-72-0x0000000000400000-0x0000000000465000-memory.dmp	upx
behavioral1/memory/3028-73-0x0000000000400000-0x0000000000465000-memory.dmp	upx
behavioral1/memory/3028-164-0x0000000000400000-0x0000000000465000-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_48610ac16ade33cf81880524b81bcd60.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_48610ac16ade33cf81880524b81bcd60.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_48610ac16ade33cf81880524b81bcd60.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3028 wrote to memory of 2800	3028	JaffaCakes118_48610ac16ade33cf81880524b81bcd60.exe	30
PID 3028 wrote to memory of 2800	3028	JaffaCakes118_48610ac16ade33cf81880524b81bcd60.exe	30
PID 3028 wrote to memory of 2800	3028	JaffaCakes118_48610ac16ade33cf81880524b81bcd60.exe	30
PID 3028 wrote to memory of 2800	3028	JaffaCakes118_48610ac16ade33cf81880524b81bcd60.exe	30
PID 3028 wrote to memory of 2524	3028	JaffaCakes118_48610ac16ade33cf81880524b81bcd60.exe	32
PID 3028 wrote to memory of 2524	3028	JaffaCakes118_48610ac16ade33cf81880524b81bcd60.exe	32
PID 3028 wrote to memory of 2524	3028	JaffaCakes118_48610ac16ade33cf81880524b81bcd60.exe	32
PID 3028 wrote to memory of 2524	3028	JaffaCakes118_48610ac16ade33cf81880524b81bcd60.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_48610ac16ade33cf81880524b81bcd60.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_48610ac16ade33cf81880524b81bcd60.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3028
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_48610ac16ade33cf81880524b81bcd60.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_48610ac16ade33cf81880524b81bcd60.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2800
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_48610ac16ade33cf81880524b81bcd60.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_48610ac16ade33cf81880524b81bcd60.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2524

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\EDB8.439

Filesize
1KB

MD5
b9a56876d800972575c1de02407dd9a5

SHA1
f608d41c53e2c28f7f4f66fa5d1581fd71e09890

SHA256
21c563414241c4ad06b9c53a627c16d6aeb9250dfa1d17991d677631dc68b712

SHA512
0810b3cc9b67d5092a005747c4eb0f26a10d4c1de3aa8dd8af13d4496aa3780c0f740fbbed3fa2e0b65da7c5bf451ad855bfaf70a861e0875014139cc206bdf7

Download Submit
C:\Users\Admin\AppData\Roaming\EDB8.439

Filesize
600B

MD5
1c83abbff6e31fb6015f2c7e47f6e10e

SHA1
34aa8bf6082077140b3cda933861a4844029aca5

SHA256
440e4552128ab1cb53f882d524651dc0f470fadf54d3a0b13d2fc7bc1f542334

SHA512
fdb4af75a0b9744cf767ea993aaaa1133aa0f508eb93697c49ef6a0ba5379aab3d88fdd84bcf2123474b33b31a4610816084bb53b7225744238f40710d9b47f6

Download Submit
C:\Users\Admin\AppData\Roaming\EDB8.439

Filesize
996B

MD5
427be3abf331d4269a60f48d23e36880

SHA1
70657246854a2db1c3d03609105e627abebce605

SHA256
6ee6b933d32c3063713d36b767269559ac450d59c67afa1187ed430d3f7089fe

SHA512
ec6f829e06c10dbd138d72e1847d5388a61c30634d78030edc8997501bea859598bbb5a4d1c14d154a10523138171b311298d6790824b404f9145334524f4c81

Download Submit
memory/2524-71-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download
memory/2524-72-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download
memory/2800-6-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download
memory/3028-1-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download
memory/3028-2-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download
memory/3028-13-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download
memory/3028-73-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download
memory/3028-164-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads