cycbot | a3bf9fb6e603f60eec5bf15e1fed88b0ed5032bddf2ac370213b9b3451248d49

General

Target

JaffaCakes118_3486d3609a6da50ea2ccf195bd7b9042.exe
Size

163KB
MD5

3486d3609a6da50ea2ccf195bd7b9042
SHA1

28f693b3b60dd289c867f2db58c2778282a3e98a
SHA256

a3bf9fb6e603f60eec5bf15e1fed88b0ed5032bddf2ac370213b9b3451248d49
SHA512

00f8c5f6c437c3649dc0c7fd324429596560fb7433c9e204d37bfd2f216c1c2f8f017a402d7e4b134429a0d84b65fe774e788949b8c608ae444720e84dffddc6
SSDEEP

3072:qgJQ5vuredv6ELzej7sBKq74Ew9kK88h9tcEFz/zSJ+q8IbBEMO1fM/FNleO:qEQ5fdv66C7sGEGC8eEFeJ+qVVEMOmFe

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/3000-8-0x0000000000400000-0x000000000043D000-memory.dmp	family_cycbot
behavioral1/memory/1740-19-0x0000000000400000-0x000000000043D000-memory.dmp	family_cycbot
behavioral1/memory/1084-80-0x0000000000400000-0x000000000043D000-memory.dmp	family_cycbot
behavioral1/memory/1740-81-0x0000000000400000-0x000000000043D000-memory.dmp	family_cycbot
behavioral1/memory/1740-168-0x0000000000400000-0x000000000043D000-memory.dmp	family_cycbot
behavioral1/memory/1740-205-0x0000000000400000-0x000000000043D000-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_3486d3609a6da50ea2ccf195bd7b9042.exe

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1740-2-0x0000000000400000-0x000000000043D000-memory.dmp	upx
behavioral1/memory/3000-6-0x0000000000400000-0x000000000043D000-memory.dmp	upx
behavioral1/memory/3000-8-0x0000000000400000-0x000000000043D000-memory.dmp	upx
behavioral1/memory/3000-9-0x0000000000400000-0x000000000043D000-memory.dmp	upx
behavioral1/memory/1740-19-0x0000000000400000-0x000000000043D000-memory.dmp	upx
behavioral1/memory/1084-80-0x0000000000400000-0x000000000043D000-memory.dmp	upx
behavioral1/memory/1084-79-0x0000000000400000-0x000000000043D000-memory.dmp	upx
behavioral1/memory/1740-81-0x0000000000400000-0x000000000043D000-memory.dmp	upx
behavioral1/memory/1740-168-0x0000000000400000-0x000000000043D000-memory.dmp	upx
behavioral1/memory/1740-205-0x0000000000400000-0x000000000043D000-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_3486d3609a6da50ea2ccf195bd7b9042.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_3486d3609a6da50ea2ccf195bd7b9042.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_3486d3609a6da50ea2ccf195bd7b9042.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1740 wrote to memory of 3000	1740	JaffaCakes118_3486d3609a6da50ea2ccf195bd7b9042.exe	30
PID 1740 wrote to memory of 3000	1740	JaffaCakes118_3486d3609a6da50ea2ccf195bd7b9042.exe	30
PID 1740 wrote to memory of 3000	1740	JaffaCakes118_3486d3609a6da50ea2ccf195bd7b9042.exe	30
PID 1740 wrote to memory of 3000	1740	JaffaCakes118_3486d3609a6da50ea2ccf195bd7b9042.exe	30
PID 1740 wrote to memory of 1084	1740	JaffaCakes118_3486d3609a6da50ea2ccf195bd7b9042.exe	32
PID 1740 wrote to memory of 1084	1740	JaffaCakes118_3486d3609a6da50ea2ccf195bd7b9042.exe	32
PID 1740 wrote to memory of 1084	1740	JaffaCakes118_3486d3609a6da50ea2ccf195bd7b9042.exe	32
PID 1740 wrote to memory of 1084	1740	JaffaCakes118_3486d3609a6da50ea2ccf195bd7b9042.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3486d3609a6da50ea2ccf195bd7b9042.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3486d3609a6da50ea2ccf195bd7b9042.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1740
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3486d3609a6da50ea2ccf195bd7b9042.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3486d3609a6da50ea2ccf195bd7b9042.exe startC:\Users\Admin\AppData\Roaming\dwm.exe%C:\Users\Admin\AppData\Roaming
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3000
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3486d3609a6da50ea2ccf195bd7b9042.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3486d3609a6da50ea2ccf195bd7b9042.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1084

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\F7AB.C37

Filesize
597B

MD5
3c290f62ab578171f90a75eeda30a6de

SHA1
c8d51abd27132dddb5090ef5cb3357caee89068b

SHA256
b3fcf90c49bbbcd8989c1632902af982feb0ef79aac577dd9c9d22a85198e918

SHA512
f698b33b10974f9553f7877e7734662d7ffc87413c3b9f6aaae2c3561fe329174548f19b9afaeca0e81ef7ccf032b76e61b7c85788b6222285885301bec614aa

Download Submit
C:\Users\Admin\AppData\Roaming\F7AB.C37

Filesize
1KB

MD5
c2e7e249e41215f4a66e9558e344a596

SHA1
307a7404746270ee3cc6ac694a78f4c8dfc95ee4

SHA256
8ae3244017c7e766eff8441b0b4e2850972d0fc25b43262da9db4c64343b1c2e

SHA512
4498bc8172423881a5631b8b2097b5a2e2cceeee1a50d353edfdd68ca85762c0670a4e8a5ffd52f8d0055c2a33f42af14205caf6a433eba4cc7b37adecb16bef

Download Submit
C:\Users\Admin\AppData\Roaming\F7AB.C37

Filesize
897B

MD5
035809396143b61975ca1a0b451f7725

SHA1
bc635227e8a990c5775798036b7b879c778fb3cf

SHA256
f9daa3cf3570b62291d3d8e8eb2c062c9043041fdd9ab6c11eef30c4f3cfc67f

SHA512
371d6e367a170beeaa0d99d2436faa6978cab02f6b00623e71dd201e870cc434969f399ed5c913c77401e366fc46c7ab1d5e258e4559c8e5919436e979970a86

Download Submit
C:\Users\Admin\AppData\Roaming\F7AB.C37

Filesize
1KB

MD5
190ce303db4e90cd4734c646e09904d9

SHA1
78209ac86ac8b986a52a1d7b67653a1f1b8044f1

SHA256
f358f3c791a213d5c8a57fa1a5c48d45c2083113927804786e77a1b0934e2524

SHA512
3a6356cfe0bf30003699eb8422a73db1a65b5bbc60ccdce21a51f77ee90b70b91558b631007cf71c1316942e3a5e41b32e97bf077fc5cb251dd75a2346715b92

Download Submit
memory/1084-77-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1084-80-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1084-79-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1740-19-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1740-1-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1740-81-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1740-2-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1740-168-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1740-205-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/3000-9-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/3000-8-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/3000-6-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads