cycbot | 045f7e4cf53b37c38b8ef23b29ab8e5f9282aad9418542738d54d7116169ba22

General

Target

ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe
Size

174KB
MD5

ea635810a0cbf6b490bb36bb807526fc
SHA1

ed058bfc1a381d6ed054c6e0db091224aed63782
SHA256

045f7e4cf53b37c38b8ef23b29ab8e5f9282aad9418542738d54d7116169ba22
SHA512

6201a609956cdf5d3daf9f8c4ba966b7e09a8b293cb156d8f1c0aec04299bc0f0439b56d38b6d95412b67878482bf899c10a2c14e58d4b7b9883bfd88000102a
SSDEEP

3072:2DyxASvS6A2VnAcRDzGF3ZCf8kA+HFJQ+udou:2DyxAfr10DldAwFdHu

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 5 IoCs

Cycbot is a backdoor and trojan written in C++.

resource	yara_rule
behavioral2/memory/396-14-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral2/memory/4500-15-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral2/memory/4500-78-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral2/memory/3124-80-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral2/memory/4500-195-0x0000000000400000-0x000000000048D000-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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4500-2-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/396-12-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/396-14-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/4500-15-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/4500-78-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/3124-80-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/4500-195-0x0000000000400000-0x000000000048D000-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	ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4500 wrote to memory of 396	4500	ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe	83
PID 4500 wrote to memory of 396	4500	ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe	83
PID 4500 wrote to memory of 396	4500	ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe	83
PID 4500 wrote to memory of 3124	4500	ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe	91
PID 4500 wrote to memory of 3124	4500	ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe	91
PID 4500 wrote to memory of 3124	4500	ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe	91

C:\Users\Admin\AppData\Local\Temp\ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4500
- C:\Users\Admin\AppData\Local\Temp\ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:396
- C:\Users\Admin\AppData\Local\Temp\ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\ea635810a0cbf6b490bb36bb807526fc_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3124

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\2271.7B9

Filesize
1KB

MD5
401237165fafa62c7e36c51c21fe9ff3

SHA1
21172c1638f48462fa167c05afeb1b94125aa796

SHA256
d94832b301bbebc27e25303411d90ee9423cc66cf6fa9bb29578674383687d21

SHA512
660572b307c41af8b2cc99bcf65aa7272e9a06a8e24346a76879b1905cb08c05c7e26332aba74ff93fad0e643d908ad5c9c42f8dc8e387c768241a5929d26888

Download Submit
C:\Users\Admin\AppData\Roaming\2271.7B9

Filesize
600B

MD5
f348f34dd637319949d09e65cfbcfb7b

SHA1
7c3c69a8fd30445d723ac76a27acfe94803b47bc

SHA256
6dfd7e7aff48211f343b6209960d7b855863ac412a8a0ee3ac35f68ad09dcf9d

SHA512
c3ec70e2cb9ec19db4e62c5f45f145dc6b02be82710aa51feb7614d319549ab8abe9852d49048711f1d141e61beed14a1e87009e99cc97d46f5a5b12129c4e29

Download Submit
C:\Users\Admin\AppData\Roaming\2271.7B9

Filesize
996B

MD5
33ffe742512a0b7cde3462feb445e44e

SHA1
4d208fa3aaac50c7687547a064f703c2e73af0f7

SHA256
cb777273c1a11884c306d38dbba8d1c7f1b5a1961975ee41b2664397a7cfb192

SHA512
78fece90400066475f5f49f9727039d6057569605732f9234b8116a6053d9949f102d75be99301804beb12cf6e718c337d248c3edf6091de0d36253603ff2147

Download Submit
memory/396-12-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/396-14-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/3124-80-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/4500-1-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/4500-2-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/4500-15-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/4500-78-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/4500-195-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads