cycbot | b4ff89790bc083da4ceeb56986cbcdee64b202155cd4854479096e11b18adae1

General

Target

ce60a82157bcabdfa8cbb904a323299f_JaffaCakes118.exe
Size

182KB
MD5

ce60a82157bcabdfa8cbb904a323299f
SHA1

62bae859b6b6bfea9e8c540410c18b06eebb0ad7
SHA256

b4ff89790bc083da4ceeb56986cbcdee64b202155cd4854479096e11b18adae1
SHA512

589ac0846fd8bdefa18562370481706bba5a1aa8391a207a0a982c116ac364c4b60ffe093ebce5ff2d44054d5de8b8271ecac9541c9083f5018c92a95b2c72b6
SSDEEP

3072:rYFNLfoK1Y9pmXnPGXFyc9ImActZbYKmAGpdrwhWMDhn8zFRyyB+Ydily8:r2zijEuVyc95cTAW48zFwl

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/2712-8-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2264-15-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/1868-81-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2264-82-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2264-171-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2264-210-0x0000000000400000-0x0000000000466000-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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	ce60a82157bcabdfa8cbb904a323299f_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/2264-2-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2712-7-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2712-5-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2712-8-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2264-15-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/1868-81-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2264-82-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2264-171-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2264-210-0x0000000000400000-0x0000000000466000-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	ce60a82157bcabdfa8cbb904a323299f_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ce60a82157bcabdfa8cbb904a323299f_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ce60a82157bcabdfa8cbb904a323299f_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2264 wrote to memory of 2712	2264	ce60a82157bcabdfa8cbb904a323299f_JaffaCakes118.exe	30
PID 2264 wrote to memory of 2712	2264	ce60a82157bcabdfa8cbb904a323299f_JaffaCakes118.exe	30
PID 2264 wrote to memory of 2712	2264	ce60a82157bcabdfa8cbb904a323299f_JaffaCakes118.exe	30
PID 2264 wrote to memory of 2712	2264	ce60a82157bcabdfa8cbb904a323299f_JaffaCakes118.exe	30
PID 2264 wrote to memory of 1868	2264	ce60a82157bcabdfa8cbb904a323299f_JaffaCakes118.exe	32
PID 2264 wrote to memory of 1868	2264	ce60a82157bcabdfa8cbb904a323299f_JaffaCakes118.exe	32
PID 2264 wrote to memory of 1868	2264	ce60a82157bcabdfa8cbb904a323299f_JaffaCakes118.exe	32
PID 2264 wrote to memory of 1868	2264	ce60a82157bcabdfa8cbb904a323299f_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\ce60a82157bcabdfa8cbb904a323299f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ce60a82157bcabdfa8cbb904a323299f_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2264
- C:\Users\Admin\AppData\Local\Temp\ce60a82157bcabdfa8cbb904a323299f_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\ce60a82157bcabdfa8cbb904a323299f_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2712
- C:\Users\Admin\AppData\Local\Temp\ce60a82157bcabdfa8cbb904a323299f_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\ce60a82157bcabdfa8cbb904a323299f_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1868

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\AD2E.6FC

Filesize
1KB

MD5
a4707b8eaf5cbb5f0168b4aacca98565

SHA1
ab381e531d7436ea018585890c01775789bc8a97

SHA256
af4083e12df2d54ed223888ed3c6d94973cf3392a1566756152169264e7628aa

SHA512
079fe43a3ee088beb576a2c6f0244d74f6cf843bc089a31d889bacbd7c335e89d26f4b361a0c283c5a3568f15f68894cc6ef7887fee2ecdd4b72aa7d12d84032

Download Submit
C:\Users\Admin\AppData\Roaming\AD2E.6FC

Filesize
600B

MD5
b5376eedb193db665fc02f59a018966e

SHA1
e0b847863190c65427bd0d9987a7318a0e72abc1

SHA256
0f9d8f4e40c7fdb0eb046cc90da76039e6c433481d75517325be998d077cf30c

SHA512
c42b1af01e5c933990c6de82411692071c33ef2044ecb36e102c5000f1205fc2f6ef203962bf6ad1f5ca63a529241e826a7c4aa605ed675b1725730d8344dbbf

Download Submit
C:\Users\Admin\AppData\Roaming\AD2E.6FC

Filesize
996B

MD5
3d24d4d105ee521967d928b9bdb8b01a

SHA1
6236141e0f947134455e1c2c52288ffbc8a498ad

SHA256
c3cf1b4e68bc02ad3d17263a30f92ef0889e30f44f8b23161e14576261ee7ab5

SHA512
e694870e05463a9cd181e13521da31828cb7e047b13a43bdcffbd06b66cf38fa2b4d686279f7882d39774b3427bdb1b81f85056e8eb9a8816ffb090d95478875

Download Submit
memory/1868-81-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2264-15-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2264-82-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2264-1-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2264-2-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2264-171-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2264-210-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2712-5-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2712-8-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2712-7-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads