cycbot | 2c18b47588f93746be9eb64908defaef48fc3bee1cd06cf9b05c0887cc3d62c6

General

Target

JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe
Size

166KB
MD5

41f7f2200cf39489f99f82ef1ab727d7
SHA1

c6af8c603910a3c6edd5600ff0d849c6d169cd23
SHA256

2c18b47588f93746be9eb64908defaef48fc3bee1cd06cf9b05c0887cc3d62c6
SHA512

68ae4c8c92800bfc8cd7eaf1801d9ea408f3932cdee4d909ddaeef2cdbfa7c9436e13d6b077a21eccaddb08fe453476f19fce79e11c6996e9434a1c1960e5ac7
SSDEEP

3072:Tqx0uMqX1Lkhk7CcjCcwikH2Z3YCx8gl7KFSAo1KUDRXiweGtGK7QmT:TqxgqX1LkhktfhkWAgpESAoKeRXiOR7T

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/2512-17-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1752-18-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1752-19-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2804-118-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1752-119-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1752-269-0x0000000000400000-0x0000000000491000-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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\1D655\\DBD8E.exe"	JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe

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

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1752-3-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2512-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2512-17-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2512-16-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1752-18-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1752-19-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2804-118-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1752-119-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1752-269-0x0000000000400000-0x0000000000491000-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_41f7f2200cf39489f99f82ef1ab727d7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1752 wrote to memory of 2512	1752	JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe	31
PID 1752 wrote to memory of 2512	1752	JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe	31
PID 1752 wrote to memory of 2512	1752	JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe	31
PID 1752 wrote to memory of 2512	1752	JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe	31
PID 1752 wrote to memory of 2804	1752	JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe	33
PID 1752 wrote to memory of 2804	1752	JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe	33
PID 1752 wrote to memory of 2804	1752	JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe	33
PID 1752 wrote to memory of 2804	1752	JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1752
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe startC:\Program Files (x86)\LP\8E31\D5A.exe%C:\Program Files (x86)\LP\8E31
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2512
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe startC:\Program Files (x86)\554AE\lvvm.exe%C:\Program Files (x86)\554AE
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2804

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

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

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Downloads

C:\Users\Admin\AppData\Roaming\1D655\54AE.D65

Filesize
996B

MD5
127dbc1c4d4814d8a1a4648b6bd30e50

SHA1
eaa398d0d9dfceb388b7fdb1694026197021f4e0

SHA256
b99ff5367f13753ad0373a24434d53e85d3d8bbaba2963daf58e07d10aada8e5

SHA512
8af46eac685fc7834e6d28e58face4b3549ea548e77525093a00a7bf81e9f0c4c65d80457bee3bb8a8cd0bdec30c206b618f14dc8b259a0d515e5bd9ad02f0ee

Download Submit
C:\Users\Admin\AppData\Roaming\1D655\54AE.D65

Filesize
600B

MD5
e449197c7f8744f9b693c85c2596a930

SHA1
023998c33a8f780945332f249f53914248fc022f

SHA256
16c886caec9814227842724ac10060172233519cbfb3f009109d060554f953b3

SHA512
2bbea183e1eacb67496e0812b09a6e8ff2da76f4bfaa7772d75fbac2547826c78efbc3145ca754ab3a3ea7cc013e8f71a53b8328116636305d2b5e34af86da81

Download Submit
C:\Users\Admin\AppData\Roaming\1D655\54AE.D65

Filesize
1KB

MD5
21c207a026bb3d40cd49c77d9e1cf27d

SHA1
1b02f2e940fc4c6a5b55020091ed3df4a3f037d0

SHA256
b1b19cff45f309a654874d6d44a2dbea72b4932db7e566aac24b8cd064252119

SHA512
13ec9b759f716a41b70680d1480ce082f24ea16004e8bd11297011238d3df47647a8dcaf4eb97c93f6045b78b77d32961b4657d08be40f78827f3e4c532d1b25

Download Submit
memory/1752-119-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1752-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1752-3-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1752-0-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1752-269-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1752-18-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1752-19-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2512-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2512-16-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2512-17-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2804-118-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads