cycbot | a793e45bc5702bcd117fe4efed6095d38933acfde9b91c9e10c3e2d11cd1ff08

General

Target

JaffaCakes118_494ff3a7ff00cade6e861ec93ad2a299.exe
Size

192KB
MD5

494ff3a7ff00cade6e861ec93ad2a299
SHA1

7e1cc006af5e1d1606b2625f6e3788cb8cd1f183
SHA256

a793e45bc5702bcd117fe4efed6095d38933acfde9b91c9e10c3e2d11cd1ff08
SHA512

74d793b358934afad45a94cc39afac9539e077b8d1754f6d202fe4f78ed25b291b344613ed0259c25aca7bcdcebdb95a00ad8ccda4a0151c1fc38852b98ce82f
SSDEEP

3072:nmiMyXlfGaXTmpu8E9XsoLPCrCo0RIyE0qzvv8jsRkZNeVOq4NkgTOliJzsTn7bz:nmwVxX6o8EBKCNOLvWZyMNkow4A/2

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/1796-15-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/1316-16-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2844-78-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/1316-79-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/1316-185-0x0000000000400000-0x0000000000490000-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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_494ff3a7ff00cade6e861ec93ad2a299.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/1316-2-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/1796-15-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/1796-14-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/1796-12-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/1316-16-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2844-77-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2844-78-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/1316-79-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/1316-185-0x0000000000400000-0x0000000000490000-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_494ff3a7ff00cade6e861ec93ad2a299.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1316 wrote to memory of 1796	1316	JaffaCakes118_494ff3a7ff00cade6e861ec93ad2a299.exe	28
PID 1316 wrote to memory of 1796	1316	JaffaCakes118_494ff3a7ff00cade6e861ec93ad2a299.exe	28
PID 1316 wrote to memory of 1796	1316	JaffaCakes118_494ff3a7ff00cade6e861ec93ad2a299.exe	28
PID 1316 wrote to memory of 1796	1316	JaffaCakes118_494ff3a7ff00cade6e861ec93ad2a299.exe	28
PID 1316 wrote to memory of 2844	1316	JaffaCakes118_494ff3a7ff00cade6e861ec93ad2a299.exe	30
PID 1316 wrote to memory of 2844	1316	JaffaCakes118_494ff3a7ff00cade6e861ec93ad2a299.exe	30
PID 1316 wrote to memory of 2844	1316	JaffaCakes118_494ff3a7ff00cade6e861ec93ad2a299.exe	30
PID 1316 wrote to memory of 2844	1316	JaffaCakes118_494ff3a7ff00cade6e861ec93ad2a299.exe	30

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_494ff3a7ff00cade6e861ec93ad2a299.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_494ff3a7ff00cade6e861ec93ad2a299.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1316
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_494ff3a7ff00cade6e861ec93ad2a299.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_494ff3a7ff00cade6e861ec93ad2a299.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  PID:1796
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_494ff3a7ff00cade6e861ec93ad2a299.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_494ff3a7ff00cade6e861ec93ad2a299.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  PID:2844

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

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Downloads

C:\Users\Admin\AppData\Roaming\107E.D33

Filesize
1KB

MD5
be3e62a226ff5a4b2bf2b4a5fb117bb0

SHA1
98a0a3cd3eb16566fc5af30f209bf9defa023bec

SHA256
3c240d8c9302a51c9ed192975fbfc7e3fa3f40875626b0a7e3647db42954a10a

SHA512
1f5732b8d7f6a90f5f094747794f4b4d856b1be657ab10f8f7beedcf4ac53365045390a1373ea99f789bc0ac180e398a789122e4ddf8be3ffc8612f535e6c280

Download Submit
C:\Users\Admin\AppData\Roaming\107E.D33

Filesize
600B

MD5
115a7fe50b3b9392940a13732867827f

SHA1
f102f416afa4f02f0c37e8d2bddbaf586696fc2d

SHA256
33387334a95697141d0ce378216392f244e522287b6c281fcc6ce31aae3f5a31

SHA512
23df0511300194388e784e0aa63c2c436798a5b23caeb6b19c921c59b0fecd6f49aa02a572860393c4d7ddedca89537746280734bdffea6d061164a91e8fbfcc

Download Submit
C:\Users\Admin\AppData\Roaming\107E.D33

Filesize
996B

MD5
5f3c08d5c581eee93260d341b59c14cc

SHA1
d495484b1955c1485a2f119942806a2981f2fb4c

SHA256
97646d3ddec175537c5be0ba6efca801951b21fbcead282536d29423e669a2ff

SHA512
12877f0c65b67f3b7a3e786e682c48ff48ccecc1b4f6dccb27dd4aec30e429193dbcc4312f014a550ec502c3bdb1282d6d2661820bdce31d16c60fd239838323

Download Submit
memory/1316-79-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1316-16-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1316-1-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1316-2-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1316-185-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1796-12-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1796-14-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1796-15-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2844-77-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2844-78-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads