cycbot | 257ecc779d14a601ec0815b0c033137c9cbe4a450385c0bbdc989549cb41a76b

General

Target

JaffaCakes118_0c0d20280c10e0d9974a125903dfceb3.exe
Size

164KB
MD5

0c0d20280c10e0d9974a125903dfceb3
SHA1

a92aba188f4d5500230d9789e17189d6b389d904
SHA256

257ecc779d14a601ec0815b0c033137c9cbe4a450385c0bbdc989549cb41a76b
SHA512

880e11c0a2b3d29638a2d5caef6cef631044a74ba86f46b62f56102fba9942c697c44eec8c5e2bfc11d8a81cd4f0563d6e103445322d908055454a3328b7ea66
SSDEEP

3072:uJFzJVA/H2HlLiPxewbim34iXRSG+sZZDb5f/0T133NV9K1FmH:K1JO/WQdbim3bScZt/g33NnK

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/2756-17-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2128-18-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2128-19-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/1960-137-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2128-138-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2128-296-0x0000000000400000-0x0000000000490000-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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\92397\\6B1EC.exe"	JaffaCakes118_0c0d20280c10e0d9974a125903dfceb3.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/2128-3-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2756-14-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2756-15-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2756-17-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2128-18-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2128-19-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/1960-137-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2128-138-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2128-296-0x0000000000400000-0x0000000000490000-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_0c0d20280c10e0d9974a125903dfceb3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_0c0d20280c10e0d9974a125903dfceb3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_0c0d20280c10e0d9974a125903dfceb3.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 2756	2128	JaffaCakes118_0c0d20280c10e0d9974a125903dfceb3.exe	30
PID 2128 wrote to memory of 2756	2128	JaffaCakes118_0c0d20280c10e0d9974a125903dfceb3.exe	30
PID 2128 wrote to memory of 2756	2128	JaffaCakes118_0c0d20280c10e0d9974a125903dfceb3.exe	30
PID 2128 wrote to memory of 2756	2128	JaffaCakes118_0c0d20280c10e0d9974a125903dfceb3.exe	30
PID 2128 wrote to memory of 1960	2128	JaffaCakes118_0c0d20280c10e0d9974a125903dfceb3.exe	32
PID 2128 wrote to memory of 1960	2128	JaffaCakes118_0c0d20280c10e0d9974a125903dfceb3.exe	32
PID 2128 wrote to memory of 1960	2128	JaffaCakes118_0c0d20280c10e0d9974a125903dfceb3.exe	32
PID 2128 wrote to memory of 1960	2128	JaffaCakes118_0c0d20280c10e0d9974a125903dfceb3.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0c0d20280c10e0d9974a125903dfceb3.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0c0d20280c10e0d9974a125903dfceb3.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2128
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0c0d20280c10e0d9974a125903dfceb3.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0c0d20280c10e0d9974a125903dfceb3.exe startC:\Program Files (x86)\LP\EC09\379.exe%C:\Program Files (x86)\LP\EC09
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2756
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0c0d20280c10e0d9974a125903dfceb3.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0c0d20280c10e0d9974a125903dfceb3.exe startC:\Program Files (x86)\978B2\lvvm.exe%C:\Program Files (x86)\978B2
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1960

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

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Downloads

C:\Users\Admin\AppData\Roaming\92397\78B2.239

Filesize
996B

MD5
5f175e31f2f830b4aae8a90f27862029

SHA1
33c809f071cdd2d9b9976555efd2be4ce41b0bf9

SHA256
7a314832a84e1629155ae17914060f2f89c0d584f917aad352a6d3e4b6ea3de9

SHA512
68f5cff90bf1ad67a3d62da794becc01de51b5dabca00249ff97286274bda2a0f3437df40c057697c5802b9a03f07a0ac552ab2525b446775f4822a29a5dbfc6

Download Submit
C:\Users\Admin\AppData\Roaming\92397\78B2.239

Filesize
600B

MD5
4954c55ba396f460f888b7345cccd897

SHA1
4216eb5ee74bafae2a58a020d869772ff9d1ea8c

SHA256
292f134558209ad64db3bc625e020657d08ca6d1fa9550a36f4342b30f3e9ed7

SHA512
43b1b006b9cde46e2a39baddae7f289f31373503a1c01aefdf4de6f9873b89f163a7e333f8307dd2d484b8da26d5b129aa325675ddc1a6f2e0f86a7ca54e1cfb

Download Submit
C:\Users\Admin\AppData\Roaming\92397\78B2.239

Filesize
1KB

MD5
beedbfeba07da0d6c8801d8caa0df46f

SHA1
527aa7dfa5a892e035c4a80440c37975205126bb

SHA256
b5d9fac4966bd609f334d69c649b2da72235af66fdac1db07f5b208e19d652a3

SHA512
49eef72e49e2955bedf700d274a9a208768e05fec041ac79c211b158cba76cf9b70682ade55f0669e205b31d5b23468096d630cafbd39875c7b4289ff92c8901

Download Submit
memory/1960-137-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2128-18-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2128-0-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2128-19-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2128-138-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2128-3-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2128-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2128-296-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2756-17-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2756-15-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2756-14-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads