cycbot | 84021a22457ad93f251de3f4238e58b611f36099248f24cc4147a34e5a5e94eb

General

Target

de5653cf0d7b491fdb40b6637916ab13_JaffaCakes118.exe
Size

181KB
MD5

de5653cf0d7b491fdb40b6637916ab13
SHA1

15bddbb336359eb0706a36e8d61c700efc068c63
SHA256

84021a22457ad93f251de3f4238e58b611f36099248f24cc4147a34e5a5e94eb
SHA512

0de104787347dfb21cdd87828aeccb99ee15e554234413967a1d93943f3ce6d2632cfdc62e1d5256db61b7dc1071a46de89256d1e295a8b61eb6416699db659a
SSDEEP

3072:KRU4MXPhi2IHax3QJvXWY8LkYqWv9rh2vFsanr/VUJkcmmyEYh0J4pj:oU4aM20vq4oj2tr/4YP0G

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 5 IoCs

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

resource	yara_rule
behavioral1/memory/2172-9-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2520-19-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2024-78-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2520-79-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2520-176-0x0000000000400000-0x0000000000466000-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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	de5653cf0d7b491fdb40b6637916ab13_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 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2520-2-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2172-7-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2172-9-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2520-19-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2024-78-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2520-79-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2520-176-0x0000000000400000-0x0000000000466000-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	de5653cf0d7b491fdb40b6637916ab13_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	de5653cf0d7b491fdb40b6637916ab13_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	de5653cf0d7b491fdb40b6637916ab13_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2520 wrote to memory of 2172	2520	de5653cf0d7b491fdb40b6637916ab13_JaffaCakes118.exe	30
PID 2520 wrote to memory of 2172	2520	de5653cf0d7b491fdb40b6637916ab13_JaffaCakes118.exe	30
PID 2520 wrote to memory of 2172	2520	de5653cf0d7b491fdb40b6637916ab13_JaffaCakes118.exe	30
PID 2520 wrote to memory of 2172	2520	de5653cf0d7b491fdb40b6637916ab13_JaffaCakes118.exe	30
PID 2520 wrote to memory of 2024	2520	de5653cf0d7b491fdb40b6637916ab13_JaffaCakes118.exe	33
PID 2520 wrote to memory of 2024	2520	de5653cf0d7b491fdb40b6637916ab13_JaffaCakes118.exe	33
PID 2520 wrote to memory of 2024	2520	de5653cf0d7b491fdb40b6637916ab13_JaffaCakes118.exe	33
PID 2520 wrote to memory of 2024	2520	de5653cf0d7b491fdb40b6637916ab13_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\de5653cf0d7b491fdb40b6637916ab13_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\de5653cf0d7b491fdb40b6637916ab13_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2520
- C:\Users\Admin\AppData\Local\Temp\de5653cf0d7b491fdb40b6637916ab13_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\de5653cf0d7b491fdb40b6637916ab13_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2172
- C:\Users\Admin\AppData\Local\Temp\de5653cf0d7b491fdb40b6637916ab13_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\de5653cf0d7b491fdb40b6637916ab13_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2024

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\5F98.D0B

Filesize
597B

MD5
a9057e71b0447471efdbe00fefb9caad

SHA1
20da7f9c4c68795188c1e3e32ccf2cbef7cd1a35

SHA256
b5ac33d50a1b997aef9d102f29371e2dc1235bcdd9c05c24b52f99dbd10d1ff6

SHA512
21c44aad15a47ade341c1acf2a03df10217a84fe880db888b78921600d9522ab239144b6b1b77e88025be2658a284489e8389663a22ffa0dcbc8c04735eeb96b

Download Submit
C:\Users\Admin\AppData\Roaming\5F98.D0B

Filesize
1KB

MD5
4510a5552820fbf0fbf9a55f74322b82

SHA1
66c975db3c8a8cbf4e8f5858c754fca690154c24

SHA256
f205f95bdb90f40992aad7a42b84ac09332410c6f4945038c4716f39a6db395a

SHA512
b4d763283b911c9a4888ea5338bedaa3e9f5305c0e8e1472b335339178d35a10cccd3c74093041143964257a568640cdc67e5b286c6b9d711b8c9280470ca710

Download Submit
C:\Users\Admin\AppData\Roaming\5F98.D0B

Filesize
897B

MD5
9f024204de4f6892582edcf3d5a98993

SHA1
51a9ff7b52b1f73f1e9745a4e75edb55dce954e3

SHA256
64d3cdf878c10adbd57d7de64855e390faccf971259f7146d21c8bf61856a952

SHA512
9ebd291fe27eeb2602046b9180020ff322a3d929f494cb3a0a6df8792cc9369f04cd12f99214e2bd5434f4859a4af006fc3bb26859769bc095861a443a811de3

Download Submit
C:\Users\Admin\AppData\Roaming\5F98.D0B

Filesize
1KB

MD5
143353b1d38e05d4bd25f75478231c0b

SHA1
ec54fac737e01b396b2039865f11d70f250464cf

SHA256
8c0eca406cabeead580527d7d236d0faa6cc1135f74851fe89d483137a55c43a

SHA512
3079bba6f8bbbf3767e2e3489c4715aa57a221027d737ac06f6573a33c5d900d5d125ca9ee6c6482b16b55dbccf98dff72c5581379831d54b85ac77b999e4878

Download Submit
memory/2024-78-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2172-6-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2172-7-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2172-9-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2520-19-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2520-79-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2520-1-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2520-2-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2520-176-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads