cycbot | aa61b3486a63f701432f1341321ced553149d7b084e4a0e3d28340a4033c08c9

General

Target

JaffaCakes118_8fb470d1b4b6d67a3970d3c7b9e8f1e5.exe
Size

164KB
MD5

8fb470d1b4b6d67a3970d3c7b9e8f1e5
SHA1

e534f165db10cdf48e90b91a4777c6a8bf6827be
SHA256

aa61b3486a63f701432f1341321ced553149d7b084e4a0e3d28340a4033c08c9
SHA512

1eb7c9c52d228c50c949ef5b2a7901671e34fb7571220498848f52aa2daf44418d0dc5c4f71e8a00b6d1e3ac3496e74ba7f02471bc10cf99a1744fea97d86785
SSDEEP

3072:dQgbMCivSMirg3J5UFXZ6R2CHykeANfyeBpMVVDKov1jAjW:Sms3J5mVqytUKeLMjP8y

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/1740-14-0x0000000000400000-0x0000000000444000-memory.dmp	family_cycbot
behavioral1/memory/2340-15-0x0000000000400000-0x0000000000444000-memory.dmp	family_cycbot
behavioral1/memory/2340-80-0x0000000000400000-0x0000000000444000-memory.dmp	family_cycbot
behavioral1/memory/2308-82-0x0000000000400000-0x0000000000444000-memory.dmp	family_cycbot
behavioral1/memory/2340-153-0x0000000000400000-0x0000000000444000-memory.dmp	family_cycbot
behavioral1/memory/2340-157-0x0000000000400000-0x0000000000444000-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"	JaffaCakes118_8fb470d1b4b6d67a3970d3c7b9e8f1e5.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2340-2-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral1/memory/1740-13-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral1/memory/1740-14-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral1/memory/2340-15-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral1/memory/2340-80-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral1/memory/2308-82-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral1/memory/2340-153-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral1/memory/2340-157-0x0000000000400000-0x0000000000444000-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_8fb470d1b4b6d67a3970d3c7b9e8f1e5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_8fb470d1b4b6d67a3970d3c7b9e8f1e5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_8fb470d1b4b6d67a3970d3c7b9e8f1e5.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2340 wrote to memory of 1740	2340	JaffaCakes118_8fb470d1b4b6d67a3970d3c7b9e8f1e5.exe	30
PID 2340 wrote to memory of 1740	2340	JaffaCakes118_8fb470d1b4b6d67a3970d3c7b9e8f1e5.exe	30
PID 2340 wrote to memory of 1740	2340	JaffaCakes118_8fb470d1b4b6d67a3970d3c7b9e8f1e5.exe	30
PID 2340 wrote to memory of 1740	2340	JaffaCakes118_8fb470d1b4b6d67a3970d3c7b9e8f1e5.exe	30
PID 2340 wrote to memory of 2308	2340	JaffaCakes118_8fb470d1b4b6d67a3970d3c7b9e8f1e5.exe	33
PID 2340 wrote to memory of 2308	2340	JaffaCakes118_8fb470d1b4b6d67a3970d3c7b9e8f1e5.exe	33
PID 2340 wrote to memory of 2308	2340	JaffaCakes118_8fb470d1b4b6d67a3970d3c7b9e8f1e5.exe	33
PID 2340 wrote to memory of 2308	2340	JaffaCakes118_8fb470d1b4b6d67a3970d3c7b9e8f1e5.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8fb470d1b4b6d67a3970d3c7b9e8f1e5.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8fb470d1b4b6d67a3970d3c7b9e8f1e5.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2340
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8fb470d1b4b6d67a3970d3c7b9e8f1e5.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8fb470d1b4b6d67a3970d3c7b9e8f1e5.exe startC:\Users\Admin\AppData\Roaming\dwm.exe%C:\Users\Admin\AppData\Roaming
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1740
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8fb470d1b4b6d67a3970d3c7b9e8f1e5.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8fb470d1b4b6d67a3970d3c7b9e8f1e5.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2308

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\73D8.8E3

Filesize
1KB

MD5
b7629f8f0b4c5002c74ef73764e317ad

SHA1
49323c351ee4aaef72fc34b8a5081771fb5eb0de

SHA256
b45b0832336e6f63411adea9e70f7621fa7379d50292d8458301fb66b70c08e4

SHA512
a36a1dd928f68cf633d85855282b8d2a8f9f8774b07a5d7791675accc6d7336d81f94bacd3f7b2d51e9cc952d6333317cdee70eeb4b1164b5d422fddb5219355

Download Submit
C:\Users\Admin\AppData\Roaming\73D8.8E3

Filesize
600B

MD5
4f808f03777f7d3d7267c039d9ad6438

SHA1
d70a475506a65f62696f2d55a7062269168ce65e

SHA256
dc313056efd441276b893c8a2b5105efa031b230f86e2adfa3e33c37008f3cbf

SHA512
388e57d2459cbca729f1fb5b535fa20fb263f4a0df2ad933a4ed7b005d7df83bdf7cc93d12fd92e87789f15efa1485089f0df21c3050bfa68df61bc9ac941f53

Download Submit
memory/1740-13-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1740-12-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1740-14-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2308-82-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2340-1-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2340-2-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2340-15-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2340-80-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2340-153-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2340-157-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads