cycbot | 193ea655b405753b7a19c04ef005a0fc2d17bc8174a3db3b98f7a0e51a2f16f7

General

Target

JaffaCakes118_0e58ce1d221a0f423af5114b09a300d5.exe
Size

164KB
MD5

0e58ce1d221a0f423af5114b09a300d5
SHA1

8197a8b7c5961b8d6f26f2c479bc5970c82c68cb
SHA256

193ea655b405753b7a19c04ef005a0fc2d17bc8174a3db3b98f7a0e51a2f16f7
SHA512

72aff7c45f18da2222a5db9492f3e76f53128f26e8cd5ec5a5e319afad80c0fdf98b709e33fdc1d1b899bd37a774e10248bc3237deece8802639c9f4f339bea1
SSDEEP

3072:2X3PwYo138ADe8c+XpUYqwSH4wbfefjAjUHBjYo3ba1E0+nqT:2wTSoenwQ9gBco3ba1P+n

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/2736-17-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2684-18-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2684-19-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/572-127-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2684-128-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2684-298-0x0000000000400000-0x0000000000491000-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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\667F6\\EC9AF.exe"	JaffaCakes118_0e58ce1d221a0f423af5114b09a300d5.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 10 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2684-3-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2736-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2736-17-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2736-16-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2684-18-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2684-19-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/572-125-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/572-127-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2684-128-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2684-298-0x0000000000400000-0x0000000000491000-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_0e58ce1d221a0f423af5114b09a300d5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_0e58ce1d221a0f423af5114b09a300d5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_0e58ce1d221a0f423af5114b09a300d5.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2684 wrote to memory of 2736	2684	JaffaCakes118_0e58ce1d221a0f423af5114b09a300d5.exe	30
PID 2684 wrote to memory of 2736	2684	JaffaCakes118_0e58ce1d221a0f423af5114b09a300d5.exe	30
PID 2684 wrote to memory of 2736	2684	JaffaCakes118_0e58ce1d221a0f423af5114b09a300d5.exe	30
PID 2684 wrote to memory of 2736	2684	JaffaCakes118_0e58ce1d221a0f423af5114b09a300d5.exe	30
PID 2684 wrote to memory of 572	2684	JaffaCakes118_0e58ce1d221a0f423af5114b09a300d5.exe	32
PID 2684 wrote to memory of 572	2684	JaffaCakes118_0e58ce1d221a0f423af5114b09a300d5.exe	32
PID 2684 wrote to memory of 572	2684	JaffaCakes118_0e58ce1d221a0f423af5114b09a300d5.exe	32
PID 2684 wrote to memory of 572	2684	JaffaCakes118_0e58ce1d221a0f423af5114b09a300d5.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0e58ce1d221a0f423af5114b09a300d5.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0e58ce1d221a0f423af5114b09a300d5.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2684
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0e58ce1d221a0f423af5114b09a300d5.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0e58ce1d221a0f423af5114b09a300d5.exe startC:\Program Files (x86)\LP\AF06\82B.exe%C:\Program Files (x86)\LP\AF06
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2736
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0e58ce1d221a0f423af5114b09a300d5.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0e58ce1d221a0f423af5114b09a300d5.exe startC:\Program Files (x86)\F62E0\lvvm.exe%C:\Program Files (x86)\F62E0
  2⤵
  - System Location Discovery: System Language Discovery
  PID:572

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

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Downloads

C:\Users\Admin\AppData\Roaming\667F6\62E0.67F

Filesize
996B

MD5
bfd940227978161ee52629d4158089f8

SHA1
8b0f75577ba2c166e90ba1bdceeceb58ad447355

SHA256
c6a9df4fe7ea566db8fe2cf3ced9a49a79414ea9c5a0d938a606221eb786a5e6

SHA512
81cc93a7236149cc6ceeb1c09473053ece00937efd0ed75e6d7acf12a930215476d7bcce49bda8b33e7f6759434ad4144b1a69e8b3f0a09f8e8dc7a784d9a28e

Download Submit
C:\Users\Admin\AppData\Roaming\667F6\62E0.67F

Filesize
600B

MD5
4c4ea89a69ac04e2c6baf2efa841a2c3

SHA1
adfce89bda88d71b1673ce1de811f84f0b2cf6c8

SHA256
a0e5fd19ca56c18a053347cf53dc74392a48d4ebdeae15b9d6a0d8e5b6c5b426

SHA512
668c30d360cee67b675cde54e3b72a6b195a9147620f243f27cf6b054be977c44f12c80762ed7806d99283a545f3da817301492fa3abe82f3555adf9d0740a33

Download Submit
C:\Users\Admin\AppData\Roaming\667F6\62E0.67F

Filesize
1KB

MD5
4bf6fc85e1e0f325aa3e28d02964c688

SHA1
666fc36d7531be7e2ec5a70cca038b45eb351b4b

SHA256
d214e6b38bc0372a8865bc6cdf42f27a11e347ae6b1928ad9119d7ea4ef3bf0b

SHA512
b647958a8087886dba48bea7fb1008149791975999abcb5fbc300ecd8c2135c6c67917420627df64716c1f37f5694065f38a361391a2329b7d6980c1dc4c8521

Download Submit
memory/572-127-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/572-125-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2684-18-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2684-0-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2684-19-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2684-128-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2684-3-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2684-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2684-298-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2736-16-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2736-17-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2736-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads