cycbot | c1dde5773f0c31665b1b55e67ea5e6a8e5d2572632395d57d9bb9662a1c6545a

General

Target

JaffaCakes118_596533af4ad3d9ca93f515486bf83572.exe
Size

166KB
MD5

596533af4ad3d9ca93f515486bf83572
SHA1

4d6d4d114ee7d8b2732ae420db70a37a44f67e91
SHA256

c1dde5773f0c31665b1b55e67ea5e6a8e5d2572632395d57d9bb9662a1c6545a
SHA512

2f69568dd915c0d826896e967baf23a2dd8b82d82116950cb38964f375b8f0c5f32c62bc685d76fd076d449fb4d2745814c6c461eaccd1c76b7c321eb01255ae
SSDEEP

3072:xsKK+KQsgsoEsvwu27lFWc9LF8YApcun3V88evyu2JzTY6gX2aZlg:CiGlrlFf9LF6pcMyvyNXlyi

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/2916-15-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2568-16-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2568-17-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2988-115-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2568-116-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2568-278-0x0000000000400000-0x0000000000490000-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-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\348B7\\15105.exe"	JaffaCakes118_596533af4ad3d9ca93f515486bf83572.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/2568-2-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2916-15-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2916-14-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2916-12-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2568-16-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2568-17-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2988-115-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2568-116-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2568-278-0x0000000000400000-0x0000000000490000-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_596533af4ad3d9ca93f515486bf83572.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2568 wrote to memory of 2916	2568	JaffaCakes118_596533af4ad3d9ca93f515486bf83572.exe	30
PID 2568 wrote to memory of 2916	2568	JaffaCakes118_596533af4ad3d9ca93f515486bf83572.exe	30
PID 2568 wrote to memory of 2916	2568	JaffaCakes118_596533af4ad3d9ca93f515486bf83572.exe	30
PID 2568 wrote to memory of 2916	2568	JaffaCakes118_596533af4ad3d9ca93f515486bf83572.exe	30
PID 2568 wrote to memory of 2988	2568	JaffaCakes118_596533af4ad3d9ca93f515486bf83572.exe	32
PID 2568 wrote to memory of 2988	2568	JaffaCakes118_596533af4ad3d9ca93f515486bf83572.exe	32
PID 2568 wrote to memory of 2988	2568	JaffaCakes118_596533af4ad3d9ca93f515486bf83572.exe	32
PID 2568 wrote to memory of 2988	2568	JaffaCakes118_596533af4ad3d9ca93f515486bf83572.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_596533af4ad3d9ca93f515486bf83572.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_596533af4ad3d9ca93f515486bf83572.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2568
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_596533af4ad3d9ca93f515486bf83572.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_596533af4ad3d9ca93f515486bf83572.exe startC:\Program Files (x86)\LP\0533\73C.exe%C:\Program Files (x86)\LP\0533
  2⤵
  PID:2916
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_596533af4ad3d9ca93f515486bf83572.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_596533af4ad3d9ca93f515486bf83572.exe startC:\Program Files (x86)\B75BD\lvvm.exe%C:\Program Files (x86)\B75BD
  2⤵
  PID:2988

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\348B7\75BD.48B

Filesize
996B

MD5
4f3114ea2b370499e16a3d02b87134a4

SHA1
c1fb0c6e49a0183d995cf6fd91305c08677ab544

SHA256
092340082dfe7b18600f955193e0a91f87cb37b19d38a6cd81336de88efd5e9c

SHA512
ad9dc2cd2e40e2a6493237b7d0ad765cd3beca044ad87de0694fb5053cbeac098e934f31b0d78d8ef947b77ca6ab13c3d6b5d2c09eed80e6ad9e2c66ef8c5243

Download Submit
C:\Users\Admin\AppData\Roaming\348B7\75BD.48B

Filesize
600B

MD5
e238aac15abcc939aaf9dc6a29db3a3a

SHA1
6f584ab575397528fd805fb67bf3536ec18a2333

SHA256
8f6bf23cc499c186fb330bda3346f8c72d8aef8c01dd0430abddfede24b6df71

SHA512
1d3096b11224ebc1f1c1c8128a2168849f7490de7980a867a09842313d25d373b26310a3335d22435cb7ad9d9ae3f000c96716d7b696fa075727f9e835dbc463

Download Submit
C:\Users\Admin\AppData\Roaming\348B7\75BD.48B

Filesize
1KB

MD5
d21a3fda0e4f463614a3492cd5cf3cfd

SHA1
794e6f307ec113810ce938f0ef49261db5a60770

SHA256
b96c708e4566b03015d10d8d658c8d5a0d9159fc4fb7df04508132ea8d78e219

SHA512
db0c105140c6daf36c6d5c64185d9eec74132b25af19faedf6050ab415d435492794e2a78b02db9c73f8206663d43f69c7137c978e909aa2c604c146108a809a

Download Submit
memory/2568-116-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2568-2-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2568-278-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2568-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2568-16-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2568-17-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2916-14-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2916-12-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2916-15-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2988-115-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2988-114-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads