cycbot | ed1fc023df3c29977c5758b36e5435ffbc276dec7161c021de2dcb060d196d05

General

Target

JaffaCakes118_42de217ac3e95dc6c645587ce84382fa.exe
Size

165KB
MD5

42de217ac3e95dc6c645587ce84382fa
SHA1

b9e6b3e09a3ba79c1b7e4dd90c930b7056b1d620
SHA256

ed1fc023df3c29977c5758b36e5435ffbc276dec7161c021de2dcb060d196d05
SHA512

cc1bd127b1e3f5c73f0bf6db176631bc7340dca424957bb02b4edbff8d2fadd77c8003526287a053e382f441a890e1d9d8c9e26fe6086134b2e5e4387d17c269
SSDEEP

3072:T1sth1TC+d7CT4mj0TkECn1tNPD69PTyrpNbfMM/i6nYENnIlvhlzWEUsKT9rDiX:Tmthpd7CF0Tkb1/wG3fjvYknIxnesKxv

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/2880-14-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/3032-16-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/3032-17-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/1564-134-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/3032-135-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/3032-313-0x0000000000400000-0x0000000000491000-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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\CEDF7\\62FB8.exe"	JaffaCakes118_42de217ac3e95dc6c645587ce84382fa.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/3032-3-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2880-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2880-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/3032-16-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/3032-17-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/1564-133-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1564-134-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/3032-135-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/3032-313-0x0000000000400000-0x0000000000491000-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_42de217ac3e95dc6c645587ce84382fa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_42de217ac3e95dc6c645587ce84382fa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_42de217ac3e95dc6c645587ce84382fa.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3032 wrote to memory of 2880	3032	JaffaCakes118_42de217ac3e95dc6c645587ce84382fa.exe	30
PID 3032 wrote to memory of 2880	3032	JaffaCakes118_42de217ac3e95dc6c645587ce84382fa.exe	30
PID 3032 wrote to memory of 2880	3032	JaffaCakes118_42de217ac3e95dc6c645587ce84382fa.exe	30
PID 3032 wrote to memory of 2880	3032	JaffaCakes118_42de217ac3e95dc6c645587ce84382fa.exe	30
PID 3032 wrote to memory of 1564	3032	JaffaCakes118_42de217ac3e95dc6c645587ce84382fa.exe	32
PID 3032 wrote to memory of 1564	3032	JaffaCakes118_42de217ac3e95dc6c645587ce84382fa.exe	32
PID 3032 wrote to memory of 1564	3032	JaffaCakes118_42de217ac3e95dc6c645587ce84382fa.exe	32
PID 3032 wrote to memory of 1564	3032	JaffaCakes118_42de217ac3e95dc6c645587ce84382fa.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42de217ac3e95dc6c645587ce84382fa.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42de217ac3e95dc6c645587ce84382fa.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3032
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42de217ac3e95dc6c645587ce84382fa.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42de217ac3e95dc6c645587ce84382fa.exe startC:\Program Files (x86)\LP\B8AC\2F2.exe%C:\Program Files (x86)\LP\B8AC
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2880
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42de217ac3e95dc6c645587ce84382fa.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42de217ac3e95dc6c645587ce84382fa.exe startC:\Program Files (x86)\F7750\lvvm.exe%C:\Program Files (x86)\F7750
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1564

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\CEDF7\7750.EDF

Filesize
996B

MD5
be37efcb0cf2a5e8d3e5b59c1e9cfb74

SHA1
c9bd91a95a3d61d7a683a36aa78e43552c96f609

SHA256
a207f05c04e5cc73049c83480bb981830a495556689f7d7d6182f6bb5b9d9595

SHA512
620c5d61598bebf684b20a51bf4ac1e5fe72961891a64bf05e441ba3972eb594d2cf958783fd7761e9eb2a5b61a92eb2fcb6f1936df8623c90036d37ab34d43d

Download Submit
C:\Users\Admin\AppData\Roaming\CEDF7\7750.EDF

Filesize
600B

MD5
ba725451bfc91d22a38348cf0810b73e

SHA1
7d6eca2bc6a8897dcd1ad65c9231124f8fafa86f

SHA256
6de20e2ad5037fc80739503142896517470b60c057c07bc8bcbece8611466649

SHA512
d725b6afcd3e768d2a5522216dafbe0ab37fbd30aaf42effe1e353a25fd1327776dc3b0f99b31e45005d9427bb2ec994f219fb33e1414d3e1161d5110a8a81af

Download Submit
C:\Users\Admin\AppData\Roaming\CEDF7\7750.EDF

Filesize
1KB

MD5
b93c1f5d5ee08218c67bc2d6993a38e4

SHA1
f92d8d7b14477d68c289ea6f7a84129a7e7ec010

SHA256
055c4340f16c5126c76e9385e2e91dfe6aa0437629ce386072c523a351a945cb

SHA512
decccebc82ce16b343b98fc69f567fa46213c10c6664e575bff38a89481bb61541a82c1b0c4d748baf39710331a3091525822b9641bd2ef2cfc173d262ff5235

Download Submit
memory/1564-134-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1564-133-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1564-131-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2880-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2880-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3032-17-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/3032-16-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3032-0-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3032-135-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3032-3-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3032-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/3032-313-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads