cycbot | 6e4c36f30e51b428ba92f922f714d85ecddbd3ccffe4554c1aec0cf8f129ddc1

General

Target

JaffaCakes118_247cb810f2eb791c0495d0c96740adc6.exe
Size

195KB
MD5

247cb810f2eb791c0495d0c96740adc6
SHA1

116b751fe28cc3d5e0a6ef1b9b3c27bbea9d33a7
SHA256

6e4c36f30e51b428ba92f922f714d85ecddbd3ccffe4554c1aec0cf8f129ddc1
SHA512

d3f0a3b3a8afb76501566a485933611d3571340b56e1d6e36d59431df2cd0bd7cc269697a52ff8646d6f061049eb8e9f427b457482dfb01e2da10bdae02966d2
SSDEEP

6144:cdkmlBna0YJj345NBwg2kZkXG+rSxSOXTn7:eq1xP4z+r+BTn7

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/2372-8-0x0000000000400000-0x000000000048B000-memory.dmp	family_cycbot
behavioral1/memory/2356-17-0x0000000000400000-0x000000000048B000-memory.dmp	family_cycbot
behavioral1/memory/1788-86-0x0000000000400000-0x000000000048B000-memory.dmp	family_cycbot
behavioral1/memory/2356-87-0x0000000000400000-0x000000000048B000-memory.dmp	family_cycbot
behavioral1/memory/2356-198-0x0000000000400000-0x000000000048B000-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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_247cb810f2eb791c0495d0c96740adc6.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/2356-2-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2372-5-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2372-8-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2372-6-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2356-17-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/1788-86-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2356-87-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2356-198-0x0000000000400000-0x000000000048B000-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	JaffaCakes118_247cb810f2eb791c0495d0c96740adc6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_247cb810f2eb791c0495d0c96740adc6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_247cb810f2eb791c0495d0c96740adc6.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2356 wrote to memory of 2372	2356	JaffaCakes118_247cb810f2eb791c0495d0c96740adc6.exe	30
PID 2356 wrote to memory of 2372	2356	JaffaCakes118_247cb810f2eb791c0495d0c96740adc6.exe	30
PID 2356 wrote to memory of 2372	2356	JaffaCakes118_247cb810f2eb791c0495d0c96740adc6.exe	30
PID 2356 wrote to memory of 2372	2356	JaffaCakes118_247cb810f2eb791c0495d0c96740adc6.exe	30
PID 2356 wrote to memory of 1788	2356	JaffaCakes118_247cb810f2eb791c0495d0c96740adc6.exe	32
PID 2356 wrote to memory of 1788	2356	JaffaCakes118_247cb810f2eb791c0495d0c96740adc6.exe	32
PID 2356 wrote to memory of 1788	2356	JaffaCakes118_247cb810f2eb791c0495d0c96740adc6.exe	32
PID 2356 wrote to memory of 1788	2356	JaffaCakes118_247cb810f2eb791c0495d0c96740adc6.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_247cb810f2eb791c0495d0c96740adc6.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_247cb810f2eb791c0495d0c96740adc6.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2356
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_247cb810f2eb791c0495d0c96740adc6.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_247cb810f2eb791c0495d0c96740adc6.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2372
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_247cb810f2eb791c0495d0c96740adc6.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_247cb810f2eb791c0495d0c96740adc6.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1788

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\C861.AC9

Filesize
1KB

MD5
c78b1ce9101cc5b772a29956dc6d0db4

SHA1
e02ca9442508cf9812417a7691a2cf4a93ebc254

SHA256
6d8b1c98dd74342ea8e87194f24aa195fe285c08b42394edceb85b766233468f

SHA512
7db53bd4167e100a24318013c9da50aac4ae96f2a1efbe87022fd903e520d3af3555dc66995aed2b008eab70d6058a3ac458427caebfaf401203c8a989ed5635

Download Submit
C:\Users\Admin\AppData\Roaming\C861.AC9

Filesize
600B

MD5
3a09861bfaab66ecb3c86ba5330ba1ab

SHA1
eadbf058581de39528cdffc8767b0e618186d793

SHA256
a046716b51cf6fd095527215e2c3bb5a286effe169439a38a5e9fc327b725bfa

SHA512
edddac4ce240036d4c383dc1f9367880fd352c22a0a42cff427bbab1784b929cad0232edc549a2038535af1ce939f45eca197e4e6052a72d70ed1113e610636c

Download Submit
C:\Users\Admin\AppData\Roaming\C861.AC9

Filesize
996B

MD5
2d6a74006e69b1e59d005046c9439b42

SHA1
34c85adf7e26771545a691e3f8c7b18777751c6a

SHA256
656cd1df48313d32c63b039168320e9a6bd491b7fdd8c3e6f5b4d71081d153b0

SHA512
3441c85b4e4269a591623510178b62539b005f2a87d1bbb5d67f6d99c4c53aaeb0e9f39fc301798bc6294ad78a4af04a650e864348b81ad52e6983b3b98aae95

Download Submit
memory/1788-86-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2356-1-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2356-2-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2356-17-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2356-87-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2356-198-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2372-5-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2372-8-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2372-6-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads