cycbot | b15360d4a76354cbc0dcec4fc03f527f734a16ab923f874c5e5b7f633cb5e805

General

Target

fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe
Size

184KB
MD5

fae1c8b620dc64415227f36408a83c57
SHA1

7bbcdb378d141a1f7af1da63369b0e7aad8e5235
SHA256

b15360d4a76354cbc0dcec4fc03f527f734a16ab923f874c5e5b7f633cb5e805
SHA512

95dc345b29dbc1b7a53cf54295442c55337bc13a0b07fdaac825e31a9088a97c15e6603db539c7d53b0d8fe05b999fe94d6932c3949d13d0eb16dbfa347548c6
SSDEEP

3072:b4ebMAvdJrQGuLIn2s8m2HF8LqCHfXeKHxbBgYJiH0yCKuv8Lc+5:8AvTrTaJs8m2HunXnRNBJiH0yC5s

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/2376-13-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2408-14-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2408-81-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2100-85-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2408-184-0x0000000000400000-0x000000000046C000-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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	fae1c8b620dc64415227f36408a83c57_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 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2408-2-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2376-12-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2376-13-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2408-14-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2408-81-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2100-83-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2100-85-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2408-184-0x0000000000400000-0x000000000046C000-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	fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2408 wrote to memory of 2376	2408	fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe	31
PID 2408 wrote to memory of 2376	2408	fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe	31
PID 2408 wrote to memory of 2376	2408	fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe	31
PID 2408 wrote to memory of 2376	2408	fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe	31
PID 2408 wrote to memory of 2100	2408	fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe	33
PID 2408 wrote to memory of 2100	2408	fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe	33
PID 2408 wrote to memory of 2100	2408	fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe	33
PID 2408 wrote to memory of 2100	2408	fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2408
- C:\Users\Admin\AppData\Local\Temp\fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2376
- C:\Users\Admin\AppData\Local\Temp\fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2100

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\9EF8.898

Filesize
1KB

MD5
5deade796b9b574d65f6b8eacca88f0b

SHA1
86f3d866c76ba35c59dbed7abdbeea62a5a1e360

SHA256
f8b81309e697560e5a07e1db23769d054eaa21ccb8d4674be10f3301a1ecb496

SHA512
bf4395b5408607b557b27f4eae4278e3ba9f2a52ad7319aeaf2acb2175fbd68cdbfda7d9ccb49608cf295a6dae8a67ba1091ab7383cea3cff39a786e60429ab2

Download Submit
C:\Users\Admin\AppData\Roaming\9EF8.898

Filesize
600B

MD5
bb788a8046b792aa8411d5216f450d43

SHA1
12dd86c7d52ba173c9d146643963ae23da034083

SHA256
17cf504ef16fed62f30be627789f9664d6b0756b50359da78b388a98d9820193

SHA512
cd3a6e3973674756bc19d326333c344c1b6d4114117ef1c585f736fcff1a63520c00dbf02b4e10b57a435ab20c1299263cd666026d9fc41a7df40ae76b971b34

Download Submit
C:\Users\Admin\AppData\Roaming\9EF8.898

Filesize
996B

MD5
56be3e04f3170f997ff49d0309ac8cae

SHA1
5cc6ce6b61567f13f6e3b059ee6f21a36e879aab

SHA256
56cd3b5d354c37b48ba7779d80ed1ea4a101038898c54655d2e14975d58842ec

SHA512
27b00a73f42a4c909de56a2c6fab0104bd7ed6794b2f0a5f37ac64bcf4c2ee6daf6c545641d7f8e50cf5535c2160788af7404b08010f8c4ea3aa55e4a5eb46b2

Download Submit
memory/2100-83-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2100-85-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2376-12-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2376-13-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2408-1-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2408-2-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2408-14-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2408-81-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2408-184-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads