cycbot | 1ec773d463b338b66eb013c4bd1391b007326140897712d7e785df2530acc2c5

General

Target

fd61314ebe34845ef4c0b376e1436396_JaffaCakes118.exe
Size

189KB
MD5

fd61314ebe34845ef4c0b376e1436396
SHA1

d601bb3786ab95a237447efb7f45274383475cd0
SHA256

1ec773d463b338b66eb013c4bd1391b007326140897712d7e785df2530acc2c5
SHA512

47826ea633b52055daec61b4516934f9e284ac6e324f18468a94f34de3fbae2ccd660538efc78b4f1bce6e406ee16b71d2ecc3bf5535e775754340a2d4079510
SSDEEP

3072:hJSl1ILq79YgHnp5Q3TQzPV/vnhs/Mv06Uw/JuhgBLII62FyUj1yc0XZ5V7Mylnb:hol1Yq7egJ2MzN/veIfp/YhgB1yUjUc+

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/2780-8-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2652-15-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2436-80-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2652-81-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2652-172-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2652-209-0x0000000000400000-0x000000000048A000-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"	fd61314ebe34845ef4c0b376e1436396_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 10 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2652-2-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2780-5-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2780-8-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2780-7-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2652-15-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2436-79-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2436-80-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2652-81-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2652-172-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2652-209-0x0000000000400000-0x000000000048A000-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	fd61314ebe34845ef4c0b376e1436396_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fd61314ebe34845ef4c0b376e1436396_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fd61314ebe34845ef4c0b376e1436396_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2652 wrote to memory of 2780	2652	fd61314ebe34845ef4c0b376e1436396_JaffaCakes118.exe	30
PID 2652 wrote to memory of 2780	2652	fd61314ebe34845ef4c0b376e1436396_JaffaCakes118.exe	30
PID 2652 wrote to memory of 2780	2652	fd61314ebe34845ef4c0b376e1436396_JaffaCakes118.exe	30
PID 2652 wrote to memory of 2780	2652	fd61314ebe34845ef4c0b376e1436396_JaffaCakes118.exe	30
PID 2652 wrote to memory of 2436	2652	fd61314ebe34845ef4c0b376e1436396_JaffaCakes118.exe	32
PID 2652 wrote to memory of 2436	2652	fd61314ebe34845ef4c0b376e1436396_JaffaCakes118.exe	32
PID 2652 wrote to memory of 2436	2652	fd61314ebe34845ef4c0b376e1436396_JaffaCakes118.exe	32
PID 2652 wrote to memory of 2436	2652	fd61314ebe34845ef4c0b376e1436396_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\fd61314ebe34845ef4c0b376e1436396_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fd61314ebe34845ef4c0b376e1436396_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2652
- C:\Users\Admin\AppData\Local\Temp\fd61314ebe34845ef4c0b376e1436396_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\fd61314ebe34845ef4c0b376e1436396_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2780
- C:\Users\Admin\AppData\Local\Temp\fd61314ebe34845ef4c0b376e1436396_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\fd61314ebe34845ef4c0b376e1436396_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2436

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\9C21.CC8

Filesize
1KB

MD5
8eb03e1439e892ae6bebbfd85da4ec26

SHA1
dda158752c6f9521864fb0a63fab5e674792ae2c

SHA256
431ff850af1edcb716e8c97f19b7f8920b4da983e2fdbd96790653f2162e1cdc

SHA512
875ad0ca19c06e962beb21a1cf28283e3e9052ea9952eb8474c3d2fd5e5bc3f20a9092d856d55437a68238816e5d2029b63205dbe7af7a40766d5068d3ec931a

Download Submit
C:\Users\Admin\AppData\Roaming\9C21.CC8

Filesize
600B

MD5
45db342c39f7d7ced9b63bec20c8472b

SHA1
0d95b4620ed01969689004334c00cf4b86dc871d

SHA256
2f3f9896508ac3b2e905d69f7e34be5ca6673059992b69e9041e43df2fb1affb

SHA512
151b29eb29cfbc3a53f60eabc7607f03fd100ef0e4d3c2c5a5f7915818f7f7cc0fe7a9f698be51b5690562e2b02fc97a22a096aee75470e57b2068fe904b5f0c

Download Submit
C:\Users\Admin\AppData\Roaming\9C21.CC8

Filesize
996B

MD5
dcda8a02c67203bceb2ae565b5218598

SHA1
b28b30b8ac4a125dee550994d74d2b52f6ceb371

SHA256
8849210330efcd0da260d34d487a4fd5614f4099bb5b8b3ade3d268a75dfacf6

SHA512
394a383ba52a4281a7ecfa84af04446106bb330d5b4c58a5e7c773058dc964b45943e69452a0c7d0e36846ed2c1d88affce41cb9faca0429b23bf8538f4abc50

Download Submit
memory/2436-80-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2436-79-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2652-81-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2652-15-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2652-1-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2652-2-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2652-172-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2652-209-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2780-7-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2780-8-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2780-5-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads