cycbot | b668c2c9abf831b3e4996cab451136b3f31bde043c58a1a8dab7eec9c39ba695

General

Target

f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe
Size

181KB
MD5

f459120dbaf13bba31e468000acf914e
SHA1

f93f142ac0ec160314e474b4c43466d9a3d6f8c9
SHA256

b668c2c9abf831b3e4996cab451136b3f31bde043c58a1a8dab7eec9c39ba695
SHA512

e53ce5b6025e545280ceeda09502ab138ff455751866489881a3b2b33f02b7c38814fecbe669fd5f756beca5c2dc7b722ae1e30d3485974e87a40135546f4818
SSDEEP

3072:vz/zHKv0tkAeX/y8p8xqIoV3gTLe3Xgk5FS+4+Gy5t56Wzf95:b7HKukpPyM8xqIotALe3weFs+54W

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/1172-10-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/1172-9-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2820-15-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2256-80-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2820-81-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2820-191-0x0000000000400000-0x000000000048D000-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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	f459120dbaf13bba31e468000acf914e_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/2820-1-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2820-3-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/1172-10-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/1172-9-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2820-15-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2256-80-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2820-81-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2820-191-0x0000000000400000-0x000000000048D000-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	f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2820 wrote to memory of 1172	2820	f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe	30
PID 2820 wrote to memory of 1172	2820	f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe	30
PID 2820 wrote to memory of 1172	2820	f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe	30
PID 2820 wrote to memory of 1172	2820	f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe	30
PID 2820 wrote to memory of 2256	2820	f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe	32
PID 2820 wrote to memory of 2256	2820	f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe	32
PID 2820 wrote to memory of 2256	2820	f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe	32
PID 2820 wrote to memory of 2256	2820	f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2820
- C:\Users\Admin\AppData\Local\Temp\f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1172
- C:\Users\Admin\AppData\Local\Temp\f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2256

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\7858.07E

Filesize
1KB

MD5
be69c4554e5fb7433e8c8819544753a2

SHA1
a61c19a4a2e008142f583997ebe8111ce5d3b604

SHA256
079c330012229735721233a6e43548412daff92ad068d34d242a615094543112

SHA512
0405b0a5c648cfd04b6a5df4e29d6db11a43433f7bd0c05857a27eb03546f27a3839910776444002f6438273bde56e6e494ecf45458a4827ea870ff0e8264c76

Download Submit
C:\Users\Admin\AppData\Roaming\7858.07E

Filesize
1KB

MD5
db3aae5e8c02e8ab914c32fa2d18bf74

SHA1
6e7db825304adf3058af219e9d7f78e8a65d5015

SHA256
5228f6bc3a9ac0d3d0b049e4f70c06630526f0395e96e5fde670544eb7e28ec9

SHA512
9dd0ce83fffc92a964a1121377d996f69d33e4bee620129d74224f1da1d08121c24f76bf6e670b991bbc3ebb6a0dde7d7c5ddbf6c91b52ee2dbd4b570032ae99

Download Submit
C:\Users\Admin\AppData\Roaming\7858.07E

Filesize
600B

MD5
bc82d5933d22ac461a92c9e77989c2ae

SHA1
eeb6a940b57dc96f348dfbce84d48cb11897df47

SHA256
5987363bc71c14b38ead15906903611bd219266b812f1058ee8d37661fd90b75

SHA512
d31ae14da27c8970c0e0d79410c511a94ea35d951b65691b1cfd4e30cbcee94f7afcc80acfa188602856d4b3beff35a4b449616bed6d249d4c80bd11c7c7b131

Download Submit
C:\Users\Admin\AppData\Roaming\7858.07E

Filesize
996B

MD5
cdec9a2b5e81bdd0e3b30dc742d34909

SHA1
3a48566782a85aa719c3c8d5469a4af9664cf591

SHA256
21cba5e518aaf93f8038813a6b3e8e4177c3d091a70ee5220ce55686b8414895

SHA512
14f6ac35d218ed22e3390b6026bf250acdcdae07b4fce93e51311b59f80265ba2271b877d3830221fe4f41b04b275fd3df9885cba975a97d2ab84724bcab815b

Download Submit
memory/1172-10-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1172-9-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2256-78-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2256-80-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2256-77-0x00000000005B0000-0x00000000006B0000-memory.dmp

Filesize
1024KB

Download
memory/2820-81-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2820-1-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2820-15-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2820-3-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2820-191-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads