cycbot | 2ab275a617484a4e0a70c849dd0adce450fdb810cc0ae6808f6f033b294e0c28

General

Target

JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe
Size

164KB
MD5

4a44120b77eb51aaebb1631e940623a9
SHA1

dd9f7ccf70671748f1f2a07cf85decd924c78097
SHA256

2ab275a617484a4e0a70c849dd0adce450fdb810cc0ae6808f6f033b294e0c28
SHA512

6053b143706ea9cba12a7172b216cb03b62a92aa4c77b678b506013861a8d00d806509e2e2c126482a39d595ff0dac2f8ba32a0ee044617cd43be5c916df9086
SSDEEP

3072:RNPMi4ngb4rIaZXzuaDhSRvnHUZkdShKAQxxILL4PS+jx1se7ozi:RNT4ngb4UaZyihGvnIbhKA8xIoPfx1nD

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 7 IoCs

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

resource	yara_rule
behavioral1/memory/2192-16-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2496-17-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2496-18-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/352-116-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/352-115-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2496-117-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2496-303-0x0000000000400000-0x0000000000491000-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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\ACA9E\\DC526.exe"	JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.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/2496-4-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2192-16-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2192-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2496-17-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2496-18-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/352-116-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/352-115-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2496-117-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2496-303-0x0000000000400000-0x0000000000491000-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_4a44120b77eb51aaebb1631e940623a9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2496 wrote to memory of 2192	2496	JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe	30
PID 2496 wrote to memory of 2192	2496	JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe	30
PID 2496 wrote to memory of 2192	2496	JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe	30
PID 2496 wrote to memory of 2192	2496	JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe	30
PID 2496 wrote to memory of 352	2496	JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe	33
PID 2496 wrote to memory of 352	2496	JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe	33
PID 2496 wrote to memory of 352	2496	JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe	33
PID 2496 wrote to memory of 352	2496	JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2496
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe startC:\Program Files (x86)\LP\26FA\C98.exe%C:\Program Files (x86)\LP\26FA
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2192
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a44120b77eb51aaebb1631e940623a9.exe startC:\Program Files (x86)\9E286\lvvm.exe%C:\Program Files (x86)\9E286
  2⤵
  - System Location Discovery: System Language Discovery
  PID:352

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\ACA9E\E286.CA9

Filesize
996B

MD5
c47ab6e7f6cc70a3d59adc42761665f4

SHA1
34f2396493bf4734f2e2f871d2470b844f376185

SHA256
818ed6e904382dc87d039ef22050b541effc9470d7ba58cea5740505c1fd60a8

SHA512
1ade71b3268b6493bb65d5c65ac147f2f35419de41eef9f32988b2b0263dbbf7b3efef82794b45bc51525b214f7ed045c7945dd0c3bdac66492ca4dfb79168e6

Download Submit
C:\Users\Admin\AppData\Roaming\ACA9E\E286.CA9

Filesize
600B

MD5
2ff45f58952d8d41d989a421b3e0cb4d

SHA1
8506e4c0af15f34d0006b8687b8353c6291bd7c3

SHA256
3da3c2a95f08118a33e0427dd2ffaee615479135b100a12b43af81038bbe75ab

SHA512
00e4aaf2350600ad4264efe242b7e7b982a677f1ab1b1ecb0ea8da9175b191fddd9161355509cfa32809ec1137e2c3fdbfc7a826f96e569e3aaab640ffa474b9

Download Submit
C:\Users\Admin\AppData\Roaming\ACA9E\E286.CA9

Filesize
1KB

MD5
34869d4f91c3206e8aebbc7ecfc27c75

SHA1
e0142b0441f697b8e7f011dbeddff0bf782d04fb

SHA256
26426b200d6641cff1c0ef4013615c6994f9af49cc7b4cf07c8aa4808601bbf1

SHA512
5b896b50299f89dc0f53f2c7584ea2c9a2305c1f6e4fb15993e3ec215e7329bbd29c785d8a6cf6b745b3c78713b23710c4618e964d20eb85f15e8670780c9883

Download Submit
memory/352-115-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/352-116-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/352-113-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2192-111-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2192-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2192-16-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2496-18-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2496-0-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2496-17-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2496-117-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2496-4-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2496-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2496-303-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads