cycbot | b97ce8b785b7796c78e436357781c54c139750744a2e48221c5e11291df644dd

General

Target

e4129dd49a25fed941390c3c868a00b6_JaffaCakes118.exe
Size

189KB
MD5

e4129dd49a25fed941390c3c868a00b6
SHA1

fef286ad794c1030b0d13c35352f955a9675e3e7
SHA256

b97ce8b785b7796c78e436357781c54c139750744a2e48221c5e11291df644dd
SHA512

68c692c3a2fea5130c43f4fbdaf36f18f67719b44f2ac558c8ed32fec80e010ce3dac3848c62054907671d356707e155d33d2e2fd5a7497d1e0c65e224f873d3
SSDEEP

3072:XhYBm4OJInA3dDresjpTliQEZoSbzj4za1uJTNUGe18XtkOxgxxNWTrCIIgm:XhOm4AInA3dXeSVUQEZ/bzolzVVO8q

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/2556-8-0x0000000000400000-0x000000000046B000-memory.dmp	family_cycbot
behavioral1/memory/3032-15-0x0000000000400000-0x000000000046B000-memory.dmp	family_cycbot
behavioral1/memory/2912-85-0x0000000000400000-0x000000000046B000-memory.dmp	family_cycbot
behavioral1/memory/3032-86-0x0000000000400000-0x000000000046B000-memory.dmp	family_cycbot
behavioral1/memory/3032-176-0x0000000000400000-0x000000000046B000-memory.dmp	family_cycbot
behavioral1/memory/3032-213-0x0000000000400000-0x000000000046B000-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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	e4129dd49a25fed941390c3c868a00b6_JaffaCakes118.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 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3032-2-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/2556-6-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/2556-8-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/3032-15-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/2912-85-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/3032-86-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/3032-176-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/3032-213-0x0000000000400000-0x000000000046B000-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	e4129dd49a25fed941390c3c868a00b6_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e4129dd49a25fed941390c3c868a00b6_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e4129dd49a25fed941390c3c868a00b6_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3032 wrote to memory of 2556	3032	e4129dd49a25fed941390c3c868a00b6_JaffaCakes118.exe	31
PID 3032 wrote to memory of 2556	3032	e4129dd49a25fed941390c3c868a00b6_JaffaCakes118.exe	31
PID 3032 wrote to memory of 2556	3032	e4129dd49a25fed941390c3c868a00b6_JaffaCakes118.exe	31
PID 3032 wrote to memory of 2556	3032	e4129dd49a25fed941390c3c868a00b6_JaffaCakes118.exe	31
PID 3032 wrote to memory of 2912	3032	e4129dd49a25fed941390c3c868a00b6_JaffaCakes118.exe	33
PID 3032 wrote to memory of 2912	3032	e4129dd49a25fed941390c3c868a00b6_JaffaCakes118.exe	33
PID 3032 wrote to memory of 2912	3032	e4129dd49a25fed941390c3c868a00b6_JaffaCakes118.exe	33
PID 3032 wrote to memory of 2912	3032	e4129dd49a25fed941390c3c868a00b6_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\e4129dd49a25fed941390c3c868a00b6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e4129dd49a25fed941390c3c868a00b6_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3032
- C:\Users\Admin\AppData\Local\Temp\e4129dd49a25fed941390c3c868a00b6_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e4129dd49a25fed941390c3c868a00b6_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2556
- C:\Users\Admin\AppData\Local\Temp\e4129dd49a25fed941390c3c868a00b6_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e4129dd49a25fed941390c3c868a00b6_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2912

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\4FD5.234

Filesize
1KB

MD5
58398bd912e05233ea49f0687e79435e

SHA1
95251bde8261cf16f3093aee843ae00b0c50b2c8

SHA256
f87d57b5cfda177b8dd8ccb30b786284f55c08158c39fc5667f150e12ee2a1fe

SHA512
b3a05c03b89071f7d1d84460a13182d1b19d3bc7096e7ce0ffaf6f5fb2509a2562035551795d7fb1b0beec44e8f2304b8d0cfce002cd2b40d26353d56c4f50d0

Download Submit
C:\Users\Admin\AppData\Roaming\4FD5.234

Filesize
600B

MD5
83b8a4d73b65f44aefb9109d52ad339b

SHA1
e83c8fd448eb8c24d4f4d532aa3e09560ebe2c1e

SHA256
5794e91bfca8d4c422e31d11616337d94b5a2451a12e39a58884f4f17c1f39a2

SHA512
e93f9f742bf6b512c395481c1590ad8b763ef9f6954db13e45a0ddb835a041090e63fdd30a47282562b87d92ea1f56fb90000735cf76c12b7a1e60258f3b0920

Download Submit
C:\Users\Admin\AppData\Roaming\4FD5.234

Filesize
996B

MD5
77dab33af51d2e19a3dcef017fb86b19

SHA1
176df9feabfc145657e4e36d3b3cf881c7df86c7

SHA256
d0613a2ae691186ff74fd595e6136e55aea5008092abbf4bf490b4188c6d47fe

SHA512
7c21ae70111c7e0facbe6b59960dc2fe1d3e33101ebbd035424a624aaf11c20ef93e68d08a6ec68506685c7c35d31d5ad851ea57eaa2868dfea31b05e9d8660f

Download Submit
memory/2556-5-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2556-8-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2556-6-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2912-84-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2912-85-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2912-140-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/3032-15-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/3032-1-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/3032-86-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/3032-2-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/3032-176-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/3032-213-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads