cycbot | 21c1f4911cfda2b312d548a050dc4270cb9e764115746eacfa2e3d8f87daea09

General

Target

JaffaCakes118_b5e0270d0b80dbfa5576d55e1d762c08.exe
Size

165KB
MD5

b5e0270d0b80dbfa5576d55e1d762c08
SHA1

1477b9677e5b2f4a8f786dc3968e87c51ab3d141
SHA256

21c1f4911cfda2b312d548a050dc4270cb9e764115746eacfa2e3d8f87daea09
SHA512

6d20a9278fb1a1276ab30debaf7282ed627fed461666797a6c66e9452a5f289ce3ad9d002dd195da889ccf626194b02a0eaaaa8f3f7d87d873c97af52997645f
SSDEEP

3072:Hiw0IZJ1/pFFPySAip8OfKAYwcOeZ1It+cz4dT/BazCjklBwIIyM:HKIr1hFFPbpRKEcLm+cz4YCglU

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/4704-20-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/3576-22-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/3576-21-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/2576-129-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/3576-130-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/3576-288-0x0000000000400000-0x0000000000491000-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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\9CEE5\\97B0B.exe"	JaffaCakes118_b5e0270d0b80dbfa5576d55e1d762c08.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3576-3-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4704-19-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4704-20-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/3576-22-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/3576-21-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/2576-128-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/2576-129-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/3576-130-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/3576-288-0x0000000000400000-0x0000000000491000-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_b5e0270d0b80dbfa5576d55e1d762c08.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3576 wrote to memory of 4704	3576	JaffaCakes118_b5e0270d0b80dbfa5576d55e1d762c08.exe	86
PID 3576 wrote to memory of 4704	3576	JaffaCakes118_b5e0270d0b80dbfa5576d55e1d762c08.exe	86
PID 3576 wrote to memory of 4704	3576	JaffaCakes118_b5e0270d0b80dbfa5576d55e1d762c08.exe	86
PID 3576 wrote to memory of 2576	3576	JaffaCakes118_b5e0270d0b80dbfa5576d55e1d762c08.exe	88
PID 3576 wrote to memory of 2576	3576	JaffaCakes118_b5e0270d0b80dbfa5576d55e1d762c08.exe	88
PID 3576 wrote to memory of 2576	3576	JaffaCakes118_b5e0270d0b80dbfa5576d55e1d762c08.exe	88

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b5e0270d0b80dbfa5576d55e1d762c08.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b5e0270d0b80dbfa5576d55e1d762c08.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3576
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b5e0270d0b80dbfa5576d55e1d762c08.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b5e0270d0b80dbfa5576d55e1d762c08.exe startC:\Program Files (x86)\LP\0B09\619.exe%C:\Program Files (x86)\LP\0B09
  2⤵
  PID:4704
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b5e0270d0b80dbfa5576d55e1d762c08.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b5e0270d0b80dbfa5576d55e1d762c08.exe startC:\Program Files (x86)\E5F97\lvvm.exe%C:\Program Files (x86)\E5F97
  2⤵
  PID:2576

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\9CEE5\5F97.CEE

Filesize
597B

MD5
e1d9f128465d882dbdf00b35844f9186

SHA1
c1aabe813996b8965aefe92030a9143123a1190e

SHA256
13574b4b667de608c8eb0e1e0100f5c55503db5fe0a5af571b1f70e1a8eb559f

SHA512
3683c631874c97833bd47e94f05b6dc0ceefc3f6959dd643bed385504aa985ba8897d98d573e6054068aca43966248fa586f01fef962cf9d29cff3a15dd3856a

Download Submit
C:\Users\Admin\AppData\Roaming\9CEE5\5F97.CEE

Filesize
1KB

MD5
7a544fe480a1056a75a89d2f6a382b17

SHA1
18945daf8d92bdbee5522ad9ecfc23f8fe3529c1

SHA256
cab87c847ab7fe9d4ef513fe7c375f98942183d3ff6a8692c0d9cda887bc907f

SHA512
dd5cae118c2a4c91875da2f1514ffc5ac7249730c7910deee914ce196062d3a921dbf024775b9f6c5f49b2fc1df259d067c9e020fff36673ba78ef9fafeca008

Download Submit
C:\Users\Admin\AppData\Roaming\9CEE5\5F97.CEE

Filesize
1KB

MD5
4519c8aa714b8d1076d3d1b3868abed7

SHA1
1b2cb65d59ba9133793ba3505e797e3616fa35db

SHA256
fecd7ea3651ce33ee7cb3a67d029fc2af0293a5f249f384fd2c34698ed0625de

SHA512
b2aa6e222eb7a2e80f82060a644aa09c891a633b021bba55ffcddb8fb8032fd68870ec697ec6e279da507a42978d5373c9f8dfb999e1086dd4f9f5e7e1d40673

Download Submit
C:\Users\Admin\AppData\Roaming\9CEE5\5F97.CEE

Filesize
897B

MD5
5ac46fc7cf8bcbdcbde975d08f2bca08

SHA1
1a592b6b7ee6546d4d1248577a5dc3547cff2d49

SHA256
ae0ae8e7b55535a84e569ab1dd496bd0bb6bdae4e587bb05d6d54d10de7bfe60

SHA512
1b8808a99646e7a37183678df40ddf2a33d0c4582f3eb789111b61bde2c8748b341fb6c5fa335fb2685776d9508e68206c92cdbda453722e499d3db5d7b9c5b0

Download Submit
memory/2576-128-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2576-129-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3576-22-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/3576-21-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3576-0-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3576-130-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3576-3-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3576-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/3576-288-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4704-20-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4704-19-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads