cycbot | 1553881425fa895cb6dfa1de4410fbdd3363f117c64cefec69764651caa71d99

General

Target

JaffaCakes118_81af0fe78842a1f601cddfb6dda09dfc.exe
Size

165KB
MD5

81af0fe78842a1f601cddfb6dda09dfc
SHA1

f674df8566d9f5722c553d95cc05183603830cc7
SHA256

1553881425fa895cb6dfa1de4410fbdd3363f117c64cefec69764651caa71d99
SHA512

92992b9c055ae990dad4e96babd98f09895ea660b873f6d6a8a0b8966ec8954e0c57c59b0aa5dce306f3b8eeedb49bc8c638b139ec775c9e57e151a9e199f20e
SSDEEP

3072:snouwXfQPvUubHKBT3D8kH4/xA02cRHwneYifp5rMARkygyNbVGPzYtKrU:EouwXfQPvUuSDH4Jp2OaIRCJtHU

Score

10^/10

cycbot backdoor discovery persistence rat 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
behavioral2/memory/1728-16-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/2136-17-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/2136-18-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/3536-126-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/2136-127-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/2136-255-0x0000000000400000-0x0000000000490000-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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\7D2DA\\6E6C1.exe"	JaffaCakes118_81af0fe78842a1f601cddfb6dda09dfc.exe

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2136-3-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/1728-14-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/1728-15-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/1728-16-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/2136-17-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/2136-18-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/3536-124-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/3536-126-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/2136-127-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/2136-255-0x0000000000400000-0x0000000000490000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 1 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_81af0fe78842a1f601cddfb6dda09dfc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2136 wrote to memory of 1728	2136	JaffaCakes118_81af0fe78842a1f601cddfb6dda09dfc.exe	82
PID 2136 wrote to memory of 1728	2136	JaffaCakes118_81af0fe78842a1f601cddfb6dda09dfc.exe	82
PID 2136 wrote to memory of 1728	2136	JaffaCakes118_81af0fe78842a1f601cddfb6dda09dfc.exe	82
PID 2136 wrote to memory of 3536	2136	JaffaCakes118_81af0fe78842a1f601cddfb6dda09dfc.exe	87
PID 2136 wrote to memory of 3536	2136	JaffaCakes118_81af0fe78842a1f601cddfb6dda09dfc.exe	87
PID 2136 wrote to memory of 3536	2136	JaffaCakes118_81af0fe78842a1f601cddfb6dda09dfc.exe	87

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_81af0fe78842a1f601cddfb6dda09dfc.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_81af0fe78842a1f601cddfb6dda09dfc.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2136
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_81af0fe78842a1f601cddfb6dda09dfc.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_81af0fe78842a1f601cddfb6dda09dfc.exe startC:\Program Files (x86)\LP\C1B7\7B5.exe%C:\Program Files (x86)\LP\C1B7
  2⤵
  PID:1728
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_81af0fe78842a1f601cddfb6dda09dfc.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_81af0fe78842a1f601cddfb6dda09dfc.exe startC:\Program Files (x86)\DA4A7\lvvm.exe%C:\Program Files (x86)\DA4A7
  2⤵
  PID:3536

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

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\7D2DA\A4A7.D2D

Filesize
996B

MD5
2fdc1dd7b0b718ff8f217af78c6f8d85

SHA1
7264eac36c91bef3df4e2c0fb1a7a0d7579fa4bd

SHA256
5d642a2f50eb36d391776a8cbb074747a79198bb772364d7e6bbf7ee054c7aea

SHA512
86d4f8af5c53275322e8ff6ab27f915ebed956e3fb2b541c3c8dbb8f8612ce5f70f4489db620cdfb4fd8d0b3ed4dc3f0ebe9f6585e06278b97ed5567b8451449

Download Submit
C:\Users\Admin\AppData\Roaming\7D2DA\A4A7.D2D

Filesize
600B

MD5
aac435680c2409dc476b59e8b04a396d

SHA1
11590522bae07eb85a8576c8a3fb7253ddbc028b

SHA256
cbd755c345fd5c727e67749614811935b1e3d655f0100be832348e18680cc4c4

SHA512
aa33506d94ae0ccc8c61422deb0f689d4e20c44fddfc38f8d31f9243addc0bdc7b9be4cf5ea5fe78988282059a8ee644c7d6de0e62f58d82d9052356b3d92292

Download Submit
memory/1728-16-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1728-14-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1728-15-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2136-17-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2136-0-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2136-18-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2136-3-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2136-127-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2136-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2136-255-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3536-124-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3536-126-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads