cycbot | b959a44137466a19ed109945596d9becc38d2925fb63b4305c9d6b432d1903d8

General

Target

fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe
Size

174KB
MD5

fba9a2cc10862e1c11054af84427f403
SHA1

44ec7c5ae23ee951227317405ee56fc9318d29bb
SHA256

b959a44137466a19ed109945596d9becc38d2925fb63b4305c9d6b432d1903d8
SHA512

cf2cd3a9195986a231f228ebadeea5ddb6d08d7ffd0c24034e5d3944294b4ef9db0dc5841450dcd34216e201a13ba57753c3753dab8876e121d4c4470e881c26
SSDEEP

3072:1OuRxqAK87oRXr7qk5M29raOXCA/XtoG3o0nW/t0GGV2II/T:1XqAX7eXr7q2FaOXCaXaB1/82

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 4 IoCs

Cycbot is a backdoor and trojan written in C++.

resource	yara_rule
behavioral1/memory/2244-8-0x0000000000400000-0x000000000044B000-memory.dmp	family_cycbot
behavioral1/memory/3052-14-0x0000000000400000-0x000000000044B000-memory.dmp	family_cycbot
behavioral1/memory/3052-86-0x0000000000400000-0x000000000044B000-memory.dmp	family_cycbot
behavioral1/memory/3052-184-0x0000000000400000-0x000000000044B000-memory.dmp	family_cycbot

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\conhost = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\conhost.exe"	fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3052-2-0x0000000000400000-0x000000000044B000-memory.dmp	upx
behavioral1/memory/2244-8-0x0000000000400000-0x000000000044B000-memory.dmp	upx
behavioral1/memory/3052-14-0x0000000000400000-0x000000000044B000-memory.dmp	upx
behavioral1/memory/3052-86-0x0000000000400000-0x000000000044B000-memory.dmp	upx
behavioral1/memory/3052-184-0x0000000000400000-0x000000000044B000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2952	2956	WerFault.exe	32

System Location Discovery: System Language Discovery 1 TTPs 2 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	fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3052 wrote to memory of 2244	3052	fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe	30
PID 3052 wrote to memory of 2244	3052	fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe	30
PID 3052 wrote to memory of 2244	3052	fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe	30
PID 3052 wrote to memory of 2244	3052	fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe	30
PID 3052 wrote to memory of 2956	3052	fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe	32
PID 3052 wrote to memory of 2956	3052	fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe	32
PID 3052 wrote to memory of 2956	3052	fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe	32
PID 3052 wrote to memory of 2956	3052	fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe	32
PID 2956 wrote to memory of 2952	2956	fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe	33
PID 2956 wrote to memory of 2952	2956	fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe	33
PID 2956 wrote to memory of 2952	2956	fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe	33
PID 2956 wrote to memory of 2952	2956	fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3052
- C:\Users\Admin\AppData\Local\Temp\fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\dwm.exe%C:\Users\Admin\AppData\Roaming
  2⤵
  PID:2244
- C:\Users\Admin\AppData\Local\Temp\fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\fba9a2cc10862e1c11054af84427f403_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2956
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2956 -s 116
    3⤵
    - Program crash
    PID:2952

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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\85E6.7E4

Filesize
600B

MD5
6ca814e2615baa1dfa8f1b22ef5c7e4a

SHA1
92aa6a9158eea627fc48f8f1fd591f0c178c2b4b

SHA256
e1971b4628b61438337e59a2c14d0778705248ef5a37766bc150690ecf631243

SHA512
87a1105a564503a8f2265398b76f3501fc1f75491807bf442ebfd58f14605a122015bcaa0f183b2762ebe3c8bf02fb6515a5d79bbe3e3243dffdcdffb4be1a6f

Download Submit
C:\Users\Admin\AppData\Roaming\85E6.7E4

Filesize
996B

MD5
69f23f9485267fce8c80466c327474a9

SHA1
8baf490d43e5d34917027b3fac5f7b1ae5df8fca

SHA256
8a9742e93e793c40da1566ebe86bcf73df5b542f55373041391e19970f7195a3

SHA512
8c5f1b512cd964198b31c334a3fdb1684732224b65ad77faff43af654255ed53806b94f1249496004fc85d6b15a0bc887dd42dd660d62b6c3c32b0632841535d

Download Submit
memory/2244-13-0x00000000005F5000-0x000000000060E000-memory.dmp

Filesize
100KB

Download
memory/2244-8-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/2956-85-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/3052-1-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/3052-2-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/3052-14-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/3052-86-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/3052-184-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads