cycbot | b4af1b26b4147037aff1e306f6bf221bcbcda09f2d0ea359753b042db9264d58

General

Target

ec070a38483d8ebc4da7bc023e2a5ca9_JaffaCakes118.exe
Size

197KB
MD5

ec070a38483d8ebc4da7bc023e2a5ca9
SHA1

c8c41423bcd25a0222a566cc9c8875412b42f1f3
SHA256

b4af1b26b4147037aff1e306f6bf221bcbcda09f2d0ea359753b042db9264d58
SHA512

523d5c139625d3ce3fabb387e2c8e4052547cd8e8f3b594d13bad137fd6c1bb56dd75105d751c5b9df1d6ec4c308632a8b6f169116a23685e5c8942d636a2ab0
SSDEEP

6144:UN+7sEZ+++eC5QM5KBIr7ILcQCgttfI28TOo:UN5rUgkLcQNbfiTO

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/2760-8-0x0000000000400000-0x000000000048B000-memory.dmp	family_cycbot
behavioral1/memory/2836-17-0x0000000000400000-0x000000000048B000-memory.dmp	family_cycbot
behavioral1/memory/2532-96-0x0000000000400000-0x000000000048B000-memory.dmp	family_cycbot
behavioral1/memory/2836-97-0x0000000000400000-0x000000000048B000-memory.dmp	family_cycbot
behavioral1/memory/2836-203-0x0000000000400000-0x000000000048B000-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-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	ec070a38483d8ebc4da7bc023e2a5ca9_JaffaCakes118.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/2836-2-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2760-5-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2760-8-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2760-7-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2836-17-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2532-94-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2532-96-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2836-97-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2836-203-0x0000000000400000-0x000000000048B000-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	ec070a38483d8ebc4da7bc023e2a5ca9_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ec070a38483d8ebc4da7bc023e2a5ca9_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ec070a38483d8ebc4da7bc023e2a5ca9_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2836 wrote to memory of 2760	2836	ec070a38483d8ebc4da7bc023e2a5ca9_JaffaCakes118.exe	30
PID 2836 wrote to memory of 2760	2836	ec070a38483d8ebc4da7bc023e2a5ca9_JaffaCakes118.exe	30
PID 2836 wrote to memory of 2760	2836	ec070a38483d8ebc4da7bc023e2a5ca9_JaffaCakes118.exe	30
PID 2836 wrote to memory of 2760	2836	ec070a38483d8ebc4da7bc023e2a5ca9_JaffaCakes118.exe	30
PID 2836 wrote to memory of 2532	2836	ec070a38483d8ebc4da7bc023e2a5ca9_JaffaCakes118.exe	32
PID 2836 wrote to memory of 2532	2836	ec070a38483d8ebc4da7bc023e2a5ca9_JaffaCakes118.exe	32
PID 2836 wrote to memory of 2532	2836	ec070a38483d8ebc4da7bc023e2a5ca9_JaffaCakes118.exe	32
PID 2836 wrote to memory of 2532	2836	ec070a38483d8ebc4da7bc023e2a5ca9_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\ec070a38483d8ebc4da7bc023e2a5ca9_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ec070a38483d8ebc4da7bc023e2a5ca9_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2836
- C:\Users\Admin\AppData\Local\Temp\ec070a38483d8ebc4da7bc023e2a5ca9_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\ec070a38483d8ebc4da7bc023e2a5ca9_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2760
- C:\Users\Admin\AppData\Local\Temp\ec070a38483d8ebc4da7bc023e2a5ca9_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\ec070a38483d8ebc4da7bc023e2a5ca9_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2532

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\B8E9.9FA

Filesize
996B

MD5
0afb37eea00be5e027ed95d2e8c238ff

SHA1
88801e4f968ec54dafa24850d1909193f4d76b07

SHA256
34f79dee2c21a698a543309751da11e8b40f7f461dfef717a8fd74369cb37b37

SHA512
9db89d07139baf0750ff84326d3152de9e1887d1f926a4190662df439d28f077f34cb764855eaec3e392a8609d4f55778f64feda9944d384ae0e866138c62ff8

Download Submit
C:\Users\Admin\AppData\Roaming\B8E9.9FA

Filesize
1KB

MD5
35fab1d7c9a64ed6f6248039d3c9dedc

SHA1
71ea256ab642258595ec6a259e524a7cd27e9570

SHA256
9e1df8176a512623df82cd85c8680573e41de3c32752e75e3543b2185d358102

SHA512
754453385409ab2d67a015faf1bd1af5c7a942f89f763d3f87f8f248b6da220d9941267b631fd8877759ea1b488ee5b38d5732e192b22a5445edc275c109e9df

Download Submit
C:\Users\Admin\AppData\Roaming\B8E9.9FA

Filesize
600B

MD5
f382b5afe27327d82dd6bb2d38ebf541

SHA1
bf95952eaf59afe09e80272a716e4665e315ded7

SHA256
dcc502c39c6d00ffdf6950ab9f41de7ec13311330e7d8a3bb93b91e8600996a2

SHA512
970083b12b5ef5681a1fa53fdd051582d80d95f63277451b3806ce173e03cd696bd9f335e46b271916346bb83a85e73972274503c1dba837c78a8104204875fa

Download Submit
memory/2532-96-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2532-94-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2760-8-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2760-7-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2760-5-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2836-17-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2836-1-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2836-97-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2836-2-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2836-203-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads