cycbot | b9c6548132ef29cd77a3ca881ab8fde9b19b37c604f8224b1379b220f1765176

General

Target

e2a8c88ff29931aefcd244c8717e66ac_JaffaCakes118.exe
Size

182KB
MD5

e2a8c88ff29931aefcd244c8717e66ac
SHA1

6cc66afbb638baf72c0843e60572b0d5f2e97949
SHA256

b9c6548132ef29cd77a3ca881ab8fde9b19b37c604f8224b1379b220f1765176
SHA512

82c4f8ae58e079db6464b90c93585fb70085bcae48cd1408664987916912bad7d89e0e30e36413f8b9159db65d10feb68e8b222c61447d8476b3de71633e0437
SSDEEP

3072:WDMOhfDaJ5OU4AxIatRyL2kTl63DeujETrB4GluHdMlIeLA:W4uLs5ON5yRLks3Dek0B7uHClfA

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/2916-7-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2612-14-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2612-78-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2336-82-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2612-83-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2612-190-0x0000000000400000-0x0000000000466000-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-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	e2a8c88ff29931aefcd244c8717e66ac_JaffaCakes118.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 9 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2612-2-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2916-6-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2916-7-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2612-14-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2612-78-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2336-80-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2336-82-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2612-83-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2612-190-0x0000000000400000-0x0000000000466000-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	e2a8c88ff29931aefcd244c8717e66ac_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e2a8c88ff29931aefcd244c8717e66ac_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e2a8c88ff29931aefcd244c8717e66ac_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2612 wrote to memory of 2916	2612	e2a8c88ff29931aefcd244c8717e66ac_JaffaCakes118.exe	30
PID 2612 wrote to memory of 2916	2612	e2a8c88ff29931aefcd244c8717e66ac_JaffaCakes118.exe	30
PID 2612 wrote to memory of 2916	2612	e2a8c88ff29931aefcd244c8717e66ac_JaffaCakes118.exe	30
PID 2612 wrote to memory of 2916	2612	e2a8c88ff29931aefcd244c8717e66ac_JaffaCakes118.exe	30
PID 2612 wrote to memory of 2336	2612	e2a8c88ff29931aefcd244c8717e66ac_JaffaCakes118.exe	32
PID 2612 wrote to memory of 2336	2612	e2a8c88ff29931aefcd244c8717e66ac_JaffaCakes118.exe	32
PID 2612 wrote to memory of 2336	2612	e2a8c88ff29931aefcd244c8717e66ac_JaffaCakes118.exe	32
PID 2612 wrote to memory of 2336	2612	e2a8c88ff29931aefcd244c8717e66ac_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\e2a8c88ff29931aefcd244c8717e66ac_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e2a8c88ff29931aefcd244c8717e66ac_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2612
- C:\Users\Admin\AppData\Local\Temp\e2a8c88ff29931aefcd244c8717e66ac_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e2a8c88ff29931aefcd244c8717e66ac_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2916
- C:\Users\Admin\AppData\Local\Temp\e2a8c88ff29931aefcd244c8717e66ac_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e2a8c88ff29931aefcd244c8717e66ac_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2336

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\3A4E.CAB

Filesize
1KB

MD5
0b93f3573bec1b0dcca4dbcca1930cd7

SHA1
7bab430d66fad9ba73d10466114405513726fb8d

SHA256
5ba6e1a843043b7450ff67aa23117ac7abcd0bd8200a35807c58aaa7eb18f886

SHA512
f142cd209db4faae645dd8dee0a42dcb5d3948a05ea20432d30632fdb9660a7276aea5cc35dfdb8d4c966eb0e4e3069f7fc589128c500f88ba66e99bba2cffbf

Download Submit
C:\Users\Admin\AppData\Roaming\3A4E.CAB

Filesize
600B

MD5
ea84845577b9b1b975f5d1ca09425d98

SHA1
7878cf0572446ad799ffdd7493bd78055292d07c

SHA256
c7a56f8647f765fbbf345c5cd84dfde1a0d9137fa2f8a00244fecf3d90df769c

SHA512
b27f261919468f07f00388fb3770a23e969ae6dd4ad353787141b1f13ec66d561f52e0ff27e62c626366ca34da1dcd3f9571b95ec455ec0b54cf6ff05a4f897e

Download Submit
C:\Users\Admin\AppData\Roaming\3A4E.CAB

Filesize
996B

MD5
bb58e1b6c9654c172c111b5f14666e45

SHA1
dc42834bbb9bc9e84b962fe4af2c515e7c39f696

SHA256
2c019ecc234721b159e8615cff483c6dc9250f170b80dbddd389142587bcf0e4

SHA512
b53c0b8c605ed62078554c0071acc89cc1a9741ea0c3eb19cdc8bfe72606681c6674801663fd03d42e01abd47e4fb47b0ba0cd927824b7e86018284467a42e9c

Download Submit
memory/2336-82-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2336-80-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2612-83-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2612-78-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2612-14-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2612-1-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2612-2-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2612-190-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2916-7-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2916-6-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads