cycbot | 6a42333eee223a81af76e46d605ca15750c1bab184f04f5d00db99b2730a29cc

General

Target

JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe
Size

193KB
MD5

a9f4dd05848bc161f07f25e4cbd7a39c
SHA1

3dda08ba4c98955387ddb723dec4bffaf5983eb7
SHA256

6a42333eee223a81af76e46d605ca15750c1bab184f04f5d00db99b2730a29cc
SHA512

dcc1ef3c4c4278b9c344d2658357dc209c2076516767b08157f01f737a4c71d07e5474b8f47d8be2a9771828feaa62137cb0ecc84d7e004b761824f17ba7939e
SSDEEP

3072:yHHN8CLR+nW80MxHlyltZclt2+P2akh/LkI3XOUOOTcQ5E7W/Tuetf86kru:0HjsmYlMtOt282VhQSTcvW706R

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/4532-9-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral2/memory/364-14-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral2/memory/4076-87-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral2/memory/364-155-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral2/memory/364-187-0x0000000000400000-0x0000000000470000-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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/364-2-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral2/memory/4532-9-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral2/memory/364-14-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral2/memory/4076-85-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral2/memory/4076-87-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral2/memory/364-155-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral2/memory/364-187-0x0000000000400000-0x0000000000470000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 1 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_a9f4dd05848bc161f07f25e4cbd7a39c.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 364 wrote to memory of 4532	364	JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe	82
PID 364 wrote to memory of 4532	364	JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe	82
PID 364 wrote to memory of 4532	364	JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe	82
PID 364 wrote to memory of 4076	364	JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe	88
PID 364 wrote to memory of 4076	364	JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe	88
PID 364 wrote to memory of 4076	364	JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe	88

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:364
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  PID:4532
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a9f4dd05848bc161f07f25e4cbd7a39c.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  PID:4076

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\A9A7.58A

Filesize
1KB

MD5
72789c24a00fc25717ec2b8aa9f6e0ea

SHA1
93c3092389a6b1db861174a33d408b3ac07b00e7

SHA256
78360f6eba8ff462fe81b2a5777c0c44d3484089ad32b76f2533fb409aa15832

SHA512
b89681f42981c41611151b1ab84f314aeac7ba1cbd52c95e018228ceb3e373153dc236a6c236a0bec497ca6ee882f5b1190baf38f6fa4818ec4648f60c35f2f0

Download Submit
C:\Users\Admin\AppData\Roaming\A9A7.58A

Filesize
600B

MD5
fafcdd0f192fe60bf2bf86f0d88e8755

SHA1
8a150b82d8e0019bb264161c41b792bc4ba75d7f

SHA256
2380930eee18788e4e96dc2ddb7730d066c3d38782cd4e6538459fe03fbe003d

SHA512
a76a7cf0bf1c7815f29cc4f2cf346194f0f86f31446bd7d90820e65c0f10a4b06bf55f9572969803beb8090724c6ed2a30de387ea5d3db5445c51f7ba5274c0f

Download Submit
C:\Users\Admin\AppData\Roaming\A9A7.58A

Filesize
996B

MD5
cbb4b1947a0dffc522eeeb07ac40d928

SHA1
9938d9708da4e47ba32286503c27432cafd851e0

SHA256
a29cdbe97a37f625e8cd4eec4b8f447a78434defbdc7e690e3653fcbd23eec6c

SHA512
ccd80de403992b7bfa5e85aed6c6bdcda6afe5ca89778988366174a1066977cc93275027cfbe953a0032c1619cec10a46dd79a2d64c2d27929d16451dbc30df0

Download Submit
memory/364-1-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/364-2-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/364-14-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/364-155-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/364-187-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/4076-85-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/4076-87-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/4532-9-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads