cycbot | fce33b5019bb0866ac8ed04dbf70cb062f1209ce2eddd51fdc307f5c46e869f2

General

Target

JaffaCakes118_42d3da1b2bc6c14e8a7c5c48be941bd5.exe
Size

160KB
MD5

42d3da1b2bc6c14e8a7c5c48be941bd5
SHA1

0a53d6b09099acb7b68b16f1e74b2f90f5b17038
SHA256

fce33b5019bb0866ac8ed04dbf70cb062f1209ce2eddd51fdc307f5c46e869f2
SHA512

fd145be876cf9373cc387bc52b1c1aaf87c5457b6d0fd913a63d67dd1ccab572cafd9f957fdfe30c7ba0f433891223475f739d7d9925fbb951f19bb60fcacd97
SSDEEP

3072:Ht4kwN08xnd9TN5m0wJUOWTCGaL6+U9N5SHnydqVcMDZ3t:Ht1w/d9Z51TOzv+l5inyN+9

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/2868-14-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2904-16-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2904-17-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2320-130-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2320-129-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2904-131-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2904-301-0x0000000000400000-0x0000000000491000-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\\861C5\\62FB8.exe"	JaffaCakes118_42d3da1b2bc6c14e8a7c5c48be941bd5.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 8 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2904-3-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2868-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2904-16-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2904-17-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2320-130-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2320-129-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2904-131-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2904-301-0x0000000000400000-0x0000000000491000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 1 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_42d3da1b2bc6c14e8a7c5c48be941bd5.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2904 wrote to memory of 2868	2904	JaffaCakes118_42d3da1b2bc6c14e8a7c5c48be941bd5.exe	30
PID 2904 wrote to memory of 2868	2904	JaffaCakes118_42d3da1b2bc6c14e8a7c5c48be941bd5.exe	30
PID 2904 wrote to memory of 2868	2904	JaffaCakes118_42d3da1b2bc6c14e8a7c5c48be941bd5.exe	30
PID 2904 wrote to memory of 2868	2904	JaffaCakes118_42d3da1b2bc6c14e8a7c5c48be941bd5.exe	30
PID 2904 wrote to memory of 2320	2904	JaffaCakes118_42d3da1b2bc6c14e8a7c5c48be941bd5.exe	32
PID 2904 wrote to memory of 2320	2904	JaffaCakes118_42d3da1b2bc6c14e8a7c5c48be941bd5.exe	32
PID 2904 wrote to memory of 2320	2904	JaffaCakes118_42d3da1b2bc6c14e8a7c5c48be941bd5.exe	32
PID 2904 wrote to memory of 2320	2904	JaffaCakes118_42d3da1b2bc6c14e8a7c5c48be941bd5.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42d3da1b2bc6c14e8a7c5c48be941bd5.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42d3da1b2bc6c14e8a7c5c48be941bd5.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2904
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42d3da1b2bc6c14e8a7c5c48be941bd5.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42d3da1b2bc6c14e8a7c5c48be941bd5.exe startC:\Program Files (x86)\LP\B8A8\2F2.exe%C:\Program Files (x86)\LP\B8A8
  2⤵
  PID:2868
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42d3da1b2bc6c14e8a7c5c48be941bd5.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42d3da1b2bc6c14e8a7c5c48be941bd5.exe startC:\Program Files (x86)\C5278\lvvm.exe%C:\Program Files (x86)\C5278
  2⤵
  PID:2320

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\861C5\5278.61C

Filesize
996B

MD5
c48b96ca5aa3d038bd8ed357a9d22bab

SHA1
eb9916bacb74276d0c7c10dd1986dc2cfeebe47f

SHA256
3c71668da1f1a16d764c1a68884f580a2cf26468ca93970ad3c0b04d08124b77

SHA512
b37848599f0c8399d36786b5e8b3aa28617b7496684b571582fc0a8ca6ba69c356275bbae0f7b299594eb899bb9588c359c6bb32c61040d1a9d69e2ae978ee0e

Download Submit
C:\Users\Admin\AppData\Roaming\861C5\5278.61C

Filesize
600B

MD5
7ed7d195ee0d1212cb981e1da3ca2838

SHA1
9058f5d95c47039f6d96c12f018cf963fa50e075

SHA256
2a69a8b1bb6722e75bd509ffaf0323f09e35cbbe0b45f6a6a225de4edb1fbc27

SHA512
6a5ff62e4f3507317f17e3f9db26da33a1b8b47d46de8656b7950eb45bc3cf255a6df85c9401341995911c43af75666b73914b011d3e227c5519cbf0e29bc333

Download Submit
C:\Users\Admin\AppData\Roaming\861C5\5278.61C

Filesize
1KB

MD5
178c5159382e121e6036b3466bdbb1cf

SHA1
11b1aa94c131ef92297e0ddb9dc878e4e9e330bf

SHA256
5d751fc80041d94d2e9e24ff3a8da8b586f68b70877ad20f7f585551faabc8bc

SHA512
d312858efd55c0bb9be947a4d7d6a622bb17ec1d0db37dba199c1303fd2ee9f25a56df3984614ce02c6da3d003bc56bc6625765fbe941b0beb970e4f9dce306b

Download Submit
memory/2320-129-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2320-130-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2868-15-0x0000000000295000-0x00000000002A0000-memory.dmp

Filesize
44KB

Download
memory/2868-126-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2868-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2904-17-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2904-16-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2904-0-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2904-131-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2904-3-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2904-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2904-301-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads