cycbot | 1127874ba9872cb22bbd4d5105c832fcf3901ba32a1d1529f71f1efb4f7a591c

General

Target

JaffaCakes118_410b528e8ce9008cf8a6fad5ae71f3fe.exe
Size

168KB
MD5

410b528e8ce9008cf8a6fad5ae71f3fe
SHA1

a6fa111bddf7df8e3b0b093378abc21fe833cfa6
SHA256

1127874ba9872cb22bbd4d5105c832fcf3901ba32a1d1529f71f1efb4f7a591c
SHA512

7aebb2cfb063d89abcdeddf092222c48198d2f0b7b09a011c732d6bd2239068843919437668471973c0c7a41c3d916ad8f2a58c6ef01601bd145e36bbc311039
SSDEEP

3072:U79CNiHrYE3V5Fyosw7DZl4Y8Ho5VQ+aokajZ0ZoXWjT:U79CsHrrPswPAY8SebokajuZom

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/2200-12-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/3044-14-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/3044-15-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2956-90-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/3044-91-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/3044-185-0x0000000000400000-0x0000000000490000-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\\3CEAF\\F8E3B.exe"	JaffaCakes118_410b528e8ce9008cf8a6fad5ae71f3fe.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 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3044-2-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2200-12-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/3044-14-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/3044-15-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2956-90-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/3044-91-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/3044-185-0x0000000000400000-0x0000000000490000-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_410b528e8ce9008cf8a6fad5ae71f3fe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_410b528e8ce9008cf8a6fad5ae71f3fe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_410b528e8ce9008cf8a6fad5ae71f3fe.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3044 wrote to memory of 2200	3044	JaffaCakes118_410b528e8ce9008cf8a6fad5ae71f3fe.exe	30
PID 3044 wrote to memory of 2200	3044	JaffaCakes118_410b528e8ce9008cf8a6fad5ae71f3fe.exe	30
PID 3044 wrote to memory of 2200	3044	JaffaCakes118_410b528e8ce9008cf8a6fad5ae71f3fe.exe	30
PID 3044 wrote to memory of 2200	3044	JaffaCakes118_410b528e8ce9008cf8a6fad5ae71f3fe.exe	30
PID 3044 wrote to memory of 2956	3044	JaffaCakes118_410b528e8ce9008cf8a6fad5ae71f3fe.exe	32
PID 3044 wrote to memory of 2956	3044	JaffaCakes118_410b528e8ce9008cf8a6fad5ae71f3fe.exe	32
PID 3044 wrote to memory of 2956	3044	JaffaCakes118_410b528e8ce9008cf8a6fad5ae71f3fe.exe	32
PID 3044 wrote to memory of 2956	3044	JaffaCakes118_410b528e8ce9008cf8a6fad5ae71f3fe.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_410b528e8ce9008cf8a6fad5ae71f3fe.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_410b528e8ce9008cf8a6fad5ae71f3fe.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_410b528e8ce9008cf8a6fad5ae71f3fe.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_410b528e8ce9008cf8a6fad5ae71f3fe.exe startC:\Program Files (x86)\LP\3B13\013.exe%C:\Program Files (x86)\LP\3B13
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2200
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_410b528e8ce9008cf8a6fad5ae71f3fe.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_410b528e8ce9008cf8a6fad5ae71f3fe.exe startC:\Program Files (x86)\AF582\lvvm.exe%C:\Program Files (x86)\AF582
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2956

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\3CEAF\F582.CEA

Filesize
1KB

MD5
689f7a497462e065ff8dd97f075e3ac5

SHA1
c12d3fa672621acccfbe5869c8b35b71c49c836a

SHA256
2e7f32c9ecf0c2ec758d56d4d701998d74db166386b416cffce11615cf886486

SHA512
c3f24abb23e81a81bfc8e9e002324f6a9f46794eed1fd774651fe6e1fba63d85cb575508ff764e78656bab4369b5dcd280414b1340979ded179d1e20d163d11e

Download Submit
C:\Users\Admin\AppData\Roaming\3CEAF\F582.CEA

Filesize
600B

MD5
1c36e12e9c34f4096d316e00cf6c2037

SHA1
3d6f7874a40b484cc060166ec24466aa5e70747b

SHA256
0ef81e1678dc451768c19d47f328806e4c92ad6417d5f8d28a458120fe3a296c

SHA512
0ba14d09618d8fce02fff9346a0631b1b267ec4b9c905c2e204050c4030cc93838030ad796ea8925dee1501eab7badfc1b5044b509cf42f1bd763991510f8e72

Download Submit
C:\Users\Admin\AppData\Roaming\3CEAF\F582.CEA

Filesize
996B

MD5
7ce239d5138e5d12fe34c3af66b802ab

SHA1
f03aa01c8c70adab891e461b088d655281f58975

SHA256
77653ac30634bd9f68298e3896693bec734cbacdafb295b7fb8dde5a14b6a8b6

SHA512
67732d792449d1e329f18572c617e6469df5d9871c57a0a0f8edda9a0791545b8e0fcbf450ed30d29d7c8d450576e32c6dee677a6dd9af5464ad55a231daee19

Download Submit
memory/2200-12-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2956-90-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2956-88-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3044-1-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/3044-2-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3044-14-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/3044-15-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3044-91-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3044-185-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads