cycbot | 2ab275a617484a4e0a70c849dd0adce450fdb810cc0ae6808f6f033b294e0c28

General

Target

JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe
Size

164KB
MD5

4a44120b77eb51aaebb1631e940623a9
SHA1

dd9f7ccf70671748f1f2a07cf85decd924c78097
SHA256

2ab275a617484a4e0a70c849dd0adce450fdb810cc0ae6808f6f033b294e0c28
SHA512

6053b143706ea9cba12a7172b216cb03b62a92aa4c77b678b506013861a8d00d806509e2e2c126482a39d595ff0dac2f8ba32a0ee044617cd43be5c916df9086
SSDEEP

3072:RNPMi4ngb4rIaZXzuaDhSRvnHUZkdShKAQxxILL4PS+jx1se7ozi:RNT4ngb4UaZyihGvnIbhKA8xIoPfx1nD

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 6 IoCs

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

resource	yara_rule
behavioral2/memory/2116-15-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/4580-16-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/4580-17-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/3212-125-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/4580-126-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/4580-296-0x0000000000400000-0x0000000000491000-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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\5872C\\B5429.exe"	JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4580-3-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/2116-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/2116-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4580-16-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4580-17-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/3212-123-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/3212-125-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4580-126-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4580-296-0x0000000000400000-0x0000000000491000-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_4a44120b77eb51aaebb1631e940623a9.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4580 wrote to memory of 2116	4580	JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe	84
PID 4580 wrote to memory of 2116	4580	JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe	84
PID 4580 wrote to memory of 2116	4580	JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe	84
PID 4580 wrote to memory of 3212	4580	JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe	100
PID 4580 wrote to memory of 3212	4580	JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe	100
PID 4580 wrote to memory of 3212	4580	JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4580
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe startC:\Program Files (x86)\LP\2985\E92.exe%C:\Program Files (x86)\LP\2985
  2⤵
  PID:2116
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe startC:\Program Files (x86)\2C7BD\lvvm.exe%C:\Program Files (x86)\2C7BD
  2⤵
  PID:3212

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\5872C\C7BD.872

Filesize
996B

MD5
3e8d2b6471123b44e68cc8ae6d7d6ef7

SHA1
b4c208b21888410658e7c9507b4fad963609a298

SHA256
aa5d3e36bfda2650a817b9094194a1a2b4c6b4df3cfd6219a27e719d89b4e4d3

SHA512
e84d94ea033e885ca0d7b4c41c1f4c7dddedcdb5f2ea1f10a8f53a3bf6073d6b6e604a09484d4f4a5a3759d81b5e7251c19f34391f71c5e07180d9fde362e66a

Download Submit
C:\Users\Admin\AppData\Roaming\5872C\C7BD.872

Filesize
600B

MD5
a296eff91bfcec9fed700544133a2faa

SHA1
f51e2d0d8f27c5f9949522924e70e090224ed19a

SHA256
85fe945c58682a34c0ad9b2ddb261e3d6abef235b72433d6fee1e29696314127

SHA512
2da57ead81a1619df4182b9a5c0fa2a4e333db196caee436e3400f192c65572ebae389678762a6296b6bee603fa8a2abb3213f2dd12f3baeab669b7349283ef0

Download Submit
C:\Users\Admin\AppData\Roaming\5872C\C7BD.872

Filesize
1KB

MD5
13a0ba6007676e4457d554f64d8dc52e

SHA1
b0a68dbd6e5eb9df19f2b10d752ea9646d269f0e

SHA256
7e3dbe26d2a4d81358a333964ded2da60f34f8b91d69e5bc6f5b2080634bb295

SHA512
a52e7fd033d787f3969662152c791d524ac46d9e3e03fc6588fb64aa22fdeca025d78fff4c2a37c104d724f48fbcd6c4e131e3f5dfc6ae36eeecf5ff2a3dc478

Download Submit
memory/2116-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2116-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3212-125-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3212-123-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4580-17-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/4580-16-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4580-0-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4580-126-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4580-3-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4580-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/4580-296-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads