cycbot | 63937432ce8cbce3d93cf782d5d568b342b491a3a3a5c804ba17c59e66afdba9

General

Target

JaffaCakes118_a0d8a6d05e49d40dcde008467422135e.exe
Size

174KB
MD5

a0d8a6d05e49d40dcde008467422135e
SHA1

fc8a6f42d9da69e1dde86568b4efef612b575f3e
SHA256

63937432ce8cbce3d93cf782d5d568b342b491a3a3a5c804ba17c59e66afdba9
SHA512

3a05a5e52ff5aff1730822d2ad6a5b3609f05d1233dbea519316c404fc07e0bb3ee03bffe3bf47fc1dfa9f955461d72a5ddd150bafadcdf703b06baa84dbf2a4
SSDEEP

3072:v1wKJ+803oJr5d/JWunRd1obDUkktXvIZ5P2i1:vm0+803oJtdht2bDUTt0T

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
behavioral1/memory/3044-10-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/1384-48-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/1384-111-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2452-115-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/1384-195-0x0000000000400000-0x000000000048D000-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-1-5-21-3342763580-2723508992-2885672917-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_a0d8a6d05e49d40dcde008467422135e.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1384-2-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/3044-9-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/3044-10-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/1384-48-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/1384-111-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2452-113-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2452-115-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/1384-195-0x0000000000400000-0x000000000048D000-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	JaffaCakes118_a0d8a6d05e49d40dcde008467422135e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a0d8a6d05e49d40dcde008467422135e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a0d8a6d05e49d40dcde008467422135e.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1384 wrote to memory of 3044	1384	JaffaCakes118_a0d8a6d05e49d40dcde008467422135e.exe	86
PID 1384 wrote to memory of 3044	1384	JaffaCakes118_a0d8a6d05e49d40dcde008467422135e.exe	86
PID 1384 wrote to memory of 3044	1384	JaffaCakes118_a0d8a6d05e49d40dcde008467422135e.exe	86
PID 1384 wrote to memory of 2452	1384	JaffaCakes118_a0d8a6d05e49d40dcde008467422135e.exe	98
PID 1384 wrote to memory of 2452	1384	JaffaCakes118_a0d8a6d05e49d40dcde008467422135e.exe	98
PID 1384 wrote to memory of 2452	1384	JaffaCakes118_a0d8a6d05e49d40dcde008467422135e.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a0d8a6d05e49d40dcde008467422135e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a0d8a6d05e49d40dcde008467422135e.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1384
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a0d8a6d05e49d40dcde008467422135e.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a0d8a6d05e49d40dcde008467422135e.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3044
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a0d8a6d05e49d40dcde008467422135e.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a0d8a6d05e49d40dcde008467422135e.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2452

Network

MITRE ATT&CK Enterprise v16

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\0F4A.57C

Filesize
996B

MD5
bd55c41a26469f99b1d7360dde69e646

SHA1
161ae148b6662eef0d6fb80e6cf118ad86c7f684

SHA256
eb51ac25400b2ae71a013c36fec2a32f03bc65ec5e9f4a40d58aeec11a50e1da

SHA512
eb773be9ea052fff82d8928f9ffdec098731cb88c20d656c9583cc2664e7d8046dc30436867198f4a7a2f3db8ee9ed589b07c1cf59f4892a11cc1b9ba2574b05

Download Submit
C:\Users\Admin\AppData\Roaming\0F4A.57C

Filesize
600B

MD5
a88d38c0e85a7b05acc262d1600a5495

SHA1
ad229c7c58da116b9f236ac839658f161ced56ed

SHA256
aa11bd61cf06e45c9adb09ea0e17a28675e0adf7b90696f4a2a37103b37e676d

SHA512
97ac90e2e12c90500466ce858ada6ed85fb25fc4c31ec74afe40910e0d50e2dd4e024fe234166c87d99bf136da64ca3e6e3b6c792e20a6036f3f7db8150dbcf9

Download Submit
C:\Users\Admin\AppData\Roaming\0F4A.57C

Filesize
1KB

MD5
fd77566b8fb69571035a5ca3dcebed92

SHA1
a136a26ccb7bf836edcba426c465ea821c3951c2

SHA256
d3816ced73717a2d0ee41d4bb987e9fba3ac3067e13c6643a4868f37e98243bd

SHA512
a6b75cc7c7a8fa7b3746f2a973e4d974137169348e266d7bceba3cff8058d97281e805e1c68c74a46d1cde18fbdfb460495a260a0cce179c4119f634284bc5b7

Download Submit
memory/1384-1-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1384-2-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1384-195-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1384-48-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1384-111-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2452-115-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2452-113-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/3044-10-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/3044-8-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/3044-9-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads