cycbot | 21674e0f4de558ce837cd05c8975665fbc06e2c5e725747730ae7e7dd23768f4

General

Target

JaffaCakes118_b76adc037fb8ca13d301f546b360662a.exe
Size

178KB
MD5

b76adc037fb8ca13d301f546b360662a
SHA1

ccdb54ed0c83dc9a22247a8e66af007ec841e8ca
SHA256

21674e0f4de558ce837cd05c8975665fbc06e2c5e725747730ae7e7dd23768f4
SHA512

6ab2c86ecd6a74a52addabcbefa915adb1e07e4fe6e25c99f77e7da2877c5972717ba786b3008cb2536adac33fedd72e95345cc51bc82605adf28782129e3dc6
SSDEEP

3072:Tnluj8N5fVY9+2W1qvGTYk6/YbbQ9RVBzEER/WKtKknrtawk/Y5ouErEhjueO:TnltPtY9SYk6/Y/IVEEwKMURawk/Y5of

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/3372-14-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/4324-15-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/4324-16-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/3136-109-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/4324-110-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/4324-284-0x0000000000400000-0x0000000000491000-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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\4F906\\E71E4.exe"	JaffaCakes118_b76adc037fb8ca13d301f546b360662a.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4324-2-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/3372-13-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/3372-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4324-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4324-16-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/3136-109-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4324-110-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4324-284-0x0000000000400000-0x0000000000491000-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_b76adc037fb8ca13d301f546b360662a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_b76adc037fb8ca13d301f546b360662a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_b76adc037fb8ca13d301f546b360662a.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4324 wrote to memory of 3372	4324	JaffaCakes118_b76adc037fb8ca13d301f546b360662a.exe	84
PID 4324 wrote to memory of 3372	4324	JaffaCakes118_b76adc037fb8ca13d301f546b360662a.exe	84
PID 4324 wrote to memory of 3372	4324	JaffaCakes118_b76adc037fb8ca13d301f546b360662a.exe	84
PID 4324 wrote to memory of 3136	4324	JaffaCakes118_b76adc037fb8ca13d301f546b360662a.exe	95
PID 4324 wrote to memory of 3136	4324	JaffaCakes118_b76adc037fb8ca13d301f546b360662a.exe	95
PID 4324 wrote to memory of 3136	4324	JaffaCakes118_b76adc037fb8ca13d301f546b360662a.exe	95

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b76adc037fb8ca13d301f546b360662a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b76adc037fb8ca13d301f546b360662a.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4324
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b76adc037fb8ca13d301f546b360662a.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b76adc037fb8ca13d301f546b360662a.exe startC:\Program Files (x86)\LP\E4E4\1A5.exe%C:\Program Files (x86)\LP\E4E4
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3372
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b76adc037fb8ca13d301f546b360662a.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b76adc037fb8ca13d301f546b360662a.exe startC:\Program Files (x86)\06BAD\lvvm.exe%C:\Program Files (x86)\06BAD
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3136

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\4F906\6BAD.F90

Filesize
996B

MD5
948521a56bcff9a1508ec0656d28d65b

SHA1
be0c4a7c149c2dd0fc7614c387a1466b81bc9e92

SHA256
1e76272e72eb19849a0db9a22db00942dd59c25a3ddcc79b302280c80c888425

SHA512
0e2c38775124cac9ce76b3ef6225e19f5397133e1b096eaa393049ca856dcc1d8693a294c9876d576633df55f25ec49e29280fd13d01dbe6fb1f37cd2ea0d2c0

Download Submit
C:\Users\Admin\AppData\Roaming\4F906\6BAD.F90

Filesize
600B

MD5
db3656ac5cee0ff4d06f5e1d0049a315

SHA1
cd2646a8798c324af8c7b1f94701ecb0687d8ea3

SHA256
10fab6c79235a7e66fb0a73319c84630fa11fbdbf9951a5eb826db41719c66a7

SHA512
2b89ea254e0c7ad5bf2e74636f48678032813c244004f4d36085baaaaac1aecc3a28e9af298ea5f5de1915bdb219ba94f876f99cba602d24f5090e0f85ec0e6d

Download Submit
C:\Users\Admin\AppData\Roaming\4F906\6BAD.F90

Filesize
1KB

MD5
4fe6e9dbd6a992ec4372ca1f4f753eb5

SHA1
8eb1411ad76e47a02da69e931a62a7206eacb026

SHA256
c22f341b5aff6a9e6aae0d1836457e3d4554c612170d2b47bb7fb0f8d77333cf

SHA512
fd4fb915ff4aee9ea8085be1f0e5a9fa594e30cd0712ed68ab3c5eea6cf3838059c70e0f116e35bb5a7f9caa15555242964bde8b137e5b654814b8212a52bef4

Download Submit
memory/3136-109-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3372-13-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3372-12-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3372-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4324-16-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/4324-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/4324-110-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4324-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4324-2-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4324-284-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads