cycbot | ea1480c57b5a0446eea8da2bbfff2a5ae83c1895b6b2c7510e6e2fd3febe6ebe

General

Target

JaffaCakes118_39b409deba11be2e60e03ea0b4b388b6.exe
Size

179KB
MD5

39b409deba11be2e60e03ea0b4b388b6
SHA1

6c0c1f3c34c55553e2729e08ab9659e8e68d69dd
SHA256

ea1480c57b5a0446eea8da2bbfff2a5ae83c1895b6b2c7510e6e2fd3febe6ebe
SHA512

2fd3fed4972ef4eff9e397148d7ffe52e59b72722701649e10ce962d3b99e67b9d989a3ff1e8e0946e012b0a805ab6141d3b4f7c187dd7eb85b9ded163781748
SSDEEP

3072:nIEPUhTHlf1fHFbqTRKm/n9faA0Wjq8F/grclX3Ad6JVoJHBo1wn+/o0q+:TMR7BqTd/9F0WW8erclgdWFK+QD+

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/2492-7-0x0000000000400000-0x0000000000483000-memory.dmp	family_cycbot
behavioral1/memory/2420-14-0x0000000000400000-0x0000000000483000-memory.dmp	family_cycbot
behavioral1/memory/2420-74-0x0000000000400000-0x0000000000483000-memory.dmp	family_cycbot
behavioral1/memory/3048-80-0x0000000000400000-0x0000000000483000-memory.dmp	family_cycbot
behavioral1/memory/2420-82-0x0000000000400000-0x0000000000483000-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-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_39b409deba11be2e60e03ea0b4b388b6.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/2420-2-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral1/memory/2492-6-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral1/memory/2492-7-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral1/memory/2420-14-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral1/memory/2420-74-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral1/memory/3048-81-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral1/memory/3048-80-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral1/memory/2420-82-0x0000000000400000-0x0000000000483000-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	JaffaCakes118_39b409deba11be2e60e03ea0b4b388b6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_39b409deba11be2e60e03ea0b4b388b6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_39b409deba11be2e60e03ea0b4b388b6.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2420 wrote to memory of 2492	2420	JaffaCakes118_39b409deba11be2e60e03ea0b4b388b6.exe	30
PID 2420 wrote to memory of 2492	2420	JaffaCakes118_39b409deba11be2e60e03ea0b4b388b6.exe	30
PID 2420 wrote to memory of 2492	2420	JaffaCakes118_39b409deba11be2e60e03ea0b4b388b6.exe	30
PID 2420 wrote to memory of 2492	2420	JaffaCakes118_39b409deba11be2e60e03ea0b4b388b6.exe	30
PID 2420 wrote to memory of 3048	2420	JaffaCakes118_39b409deba11be2e60e03ea0b4b388b6.exe	32
PID 2420 wrote to memory of 3048	2420	JaffaCakes118_39b409deba11be2e60e03ea0b4b388b6.exe	32
PID 2420 wrote to memory of 3048	2420	JaffaCakes118_39b409deba11be2e60e03ea0b4b388b6.exe	32
PID 2420 wrote to memory of 3048	2420	JaffaCakes118_39b409deba11be2e60e03ea0b4b388b6.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_39b409deba11be2e60e03ea0b4b388b6.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_39b409deba11be2e60e03ea0b4b388b6.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2420
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_39b409deba11be2e60e03ea0b4b388b6.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_39b409deba11be2e60e03ea0b4b388b6.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2492
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_39b409deba11be2e60e03ea0b4b388b6.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_39b409deba11be2e60e03ea0b4b388b6.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3048

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\3309.B61

Filesize
1KB

MD5
4fcbbdc205862ba79ecbdcade317a24f

SHA1
935e202dc41eb1570cc3c3997870fe415dbe172d

SHA256
a67b7f1b45d6e1cc977b7541f6f69f3be7cc5a829d1e5c7eb89d559155561806

SHA512
c3d213446f7a3d4213d444a81fb055a6e09a4b307edadb69cb816619b3ae8b0031890b3d57fc7931cb87395fd92996385e9e82e9e501680da3580cbe50e9c275

Download Submit
C:\Users\Admin\AppData\Roaming\3309.B61

Filesize
600B

MD5
100196f3cb7a800a0d2473a88e1b4fe0

SHA1
23b31d80bdda3b5d103d6d057a589f1ae83b46e6

SHA256
7870f398532bf0e1a56db69dcda5218e46d3bbfc3b1e96a78edf251e84f60b98

SHA512
57a9afc035f6480ca59e0760cfed1424068a26b0ceeecb4fd83a78613e63a26c97beeada548c37483470d05abd47bd67a78b11d6fe9908243d8634623fdf4ac1

Download Submit
C:\Users\Admin\AppData\Roaming\3309.B61

Filesize
996B

MD5
03ae83af69ce1b3f62d80e595e975931

SHA1
ae474af2a0c8344f78b525162a245e8c575d79c8

SHA256
f6879fb5ad0ce48fd7e31a3e89296f56ce6d5f274e87de1da9bc50059e01335d

SHA512
3476101528f53a53f0cdf01576e798c325447f931deff3c53b181e1c552f82ac4bece993df6a1cbaa5d7f3be7b22d235d63a5f74420dbef56907858ede9ba905

Download Submit
memory/2420-1-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2420-2-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2420-14-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2420-74-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2420-82-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2492-6-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2492-7-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/3048-81-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/3048-80-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads