cycbot | 7af75b257f5bc4f4324c0dfd66b00d151b49e1e167903439f15022fc09fcbb9e

General

Target

ef284bd39e5166fbd51daa027494a3b7_JaffaCakes118.exe
Size

171KB
MD5

ef284bd39e5166fbd51daa027494a3b7
SHA1

6e7be07b1bd64eea4c66e6599fca7a34b911b2fa
SHA256

7af75b257f5bc4f4324c0dfd66b00d151b49e1e167903439f15022fc09fcbb9e
SHA512

60a50d7c74ec86bce86fe3598f02b4b4e7069b5a2e0a5f0ded6a64573f18daa5f6e64a263003d6884807182ef72b352ef180fc5cc4758bd00936b7ee65a1c1ec
SSDEEP

3072:YAgKXXQs6KIMcxScZNUTBaDi1Aj0E0nzWzKBRkwt:Qg5wUFbEs3vkw

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/4328-14-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/3284-15-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/3284-16-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/4048-77-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/3284-78-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/3284-168-0x0000000000400000-0x0000000000491000-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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\5EA09\\6E6C1.exe"	ef284bd39e5166fbd51daa027494a3b7_JaffaCakes118.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3284-2-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4328-13-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4328-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/3284-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/3284-16-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/4048-75-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4048-77-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/3284-78-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/3284-168-0x0000000000400000-0x0000000000491000-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	ef284bd39e5166fbd51daa027494a3b7_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ef284bd39e5166fbd51daa027494a3b7_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ef284bd39e5166fbd51daa027494a3b7_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3284 wrote to memory of 4328	3284	ef284bd39e5166fbd51daa027494a3b7_JaffaCakes118.exe	82
PID 3284 wrote to memory of 4328	3284	ef284bd39e5166fbd51daa027494a3b7_JaffaCakes118.exe	82
PID 3284 wrote to memory of 4328	3284	ef284bd39e5166fbd51daa027494a3b7_JaffaCakes118.exe	82
PID 3284 wrote to memory of 4048	3284	ef284bd39e5166fbd51daa027494a3b7_JaffaCakes118.exe	87
PID 3284 wrote to memory of 4048	3284	ef284bd39e5166fbd51daa027494a3b7_JaffaCakes118.exe	87
PID 3284 wrote to memory of 4048	3284	ef284bd39e5166fbd51daa027494a3b7_JaffaCakes118.exe	87

C:\Users\Admin\AppData\Local\Temp\ef284bd39e5166fbd51daa027494a3b7_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ef284bd39e5166fbd51daa027494a3b7_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3284
- C:\Users\Admin\AppData\Local\Temp\ef284bd39e5166fbd51daa027494a3b7_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\ef284bd39e5166fbd51daa027494a3b7_JaffaCakes118.exe startC:\Program Files (x86)\LP\C1B5\7B5.exe%C:\Program Files (x86)\LP\C1B5
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4328
- C:\Users\Admin\AppData\Local\Temp\ef284bd39e5166fbd51daa027494a3b7_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\ef284bd39e5166fbd51daa027494a3b7_JaffaCakes118.exe startC:\Program Files (x86)\091A4\lvvm.exe%C:\Program Files (x86)\091A4
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4048

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

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Downloads

C:\Users\Admin\AppData\Roaming\5EA09\91A4.EA0

Filesize
1KB

MD5
93d557b6e1d153f5c5b87f9122982921

SHA1
9d415fb9722f806f07207eebcc4c8f81a03afca4

SHA256
422aa99859ab2d16be3209cf48f4e6ac70b921b88ef4a43f037400d9d8991fb2

SHA512
6fa984cce28f1263b01c6f476aad87feb366b0a0a2e37617cc7980d0c5a16e8960e2106650336596e6d564e9227744b512d210fda9ad28d249301de3ecd29628

Download Submit
C:\Users\Admin\AppData\Roaming\5EA09\91A4.EA0

Filesize
600B

MD5
54e91ecf47ced9f3840d7d80b0b10afa

SHA1
601d916430e9c1ed12ececf553aec57c353481ba

SHA256
f44546feb40d5f4aea0284ed0ca1b5aef127aa1d437448718af07c4626644ac8

SHA512
275b4ad8cc8e622fe6e9d42b6a67ddf152c89946a00bacd70e3929f3ac286e8214a87a9534dcefa294a1a2e063e785f2dab30c9d1db880cc5af21c8a7b36d335

Download Submit
C:\Users\Admin\AppData\Roaming\5EA09\91A4.EA0

Filesize
996B

MD5
4de7816127abfde8cf995af7cc656976

SHA1
971c476d10e06c6b34b5bdc5332a9ecdfd360fe9

SHA256
fe9d53d9b73297e68db54a2c3f25596515d0af7dea40c5a593afd7d6957c1278

SHA512
c123563aec6dc1f81b583e012a1d3f753626d2e11ebc97a58ba810d614d10fe5af5b8a0411359a4e46d2831879eabbf16ad686e29b7909e61b38f75b272b3fb4

Download Submit
memory/3284-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/3284-2-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3284-168-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3284-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3284-16-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/3284-78-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4048-77-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4048-75-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4328-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4328-12-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4328-13-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads