cycbot | 7257c84bd78c994e0161921c0f6037a9862d1ed2260d0b0b139a702b90c03240

General

Target

JaffaCakes118_0f69ae41b9672110400917971d3c4292.exe
Size

162KB
MD5

0f69ae41b9672110400917971d3c4292
SHA1

3087f3c853737172cfa97fcbac3bdd7dadfa0a6d
SHA256

7257c84bd78c994e0161921c0f6037a9862d1ed2260d0b0b139a702b90c03240
SHA512

5dc771a6e401891e3eeb8a3e2989f7af62a98c1bcb798cb233d8c408c6927f710a245e9f0168757735e464b1b997652b2fa0bdbcd1702f09e020ae0b30b5074d
SSDEEP

3072:goifMH47WdbN+FrolW/SbqG4RAaTYVAhOmTNBF+VBwDSHRN:gbSBNiF/0oRjhOmTNm/cSxN

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/2892-14-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2852-16-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2852-15-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2892-18-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2892-131-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/3056-134-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2892-288-0x0000000000400000-0x0000000000490000-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\\FA894\\62783.exe"	JaffaCakes118_0f69ae41b9672110400917971d3c4292.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 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2892-3-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2892-14-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2852-16-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2852-15-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2892-18-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2892-131-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/3056-134-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2892-288-0x0000000000400000-0x0000000000490000-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_0f69ae41b9672110400917971d3c4292.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_0f69ae41b9672110400917971d3c4292.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_0f69ae41b9672110400917971d3c4292.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2892 wrote to memory of 2852	2892	JaffaCakes118_0f69ae41b9672110400917971d3c4292.exe	30
PID 2892 wrote to memory of 2852	2892	JaffaCakes118_0f69ae41b9672110400917971d3c4292.exe	30
PID 2892 wrote to memory of 2852	2892	JaffaCakes118_0f69ae41b9672110400917971d3c4292.exe	30
PID 2892 wrote to memory of 2852	2892	JaffaCakes118_0f69ae41b9672110400917971d3c4292.exe	30
PID 2892 wrote to memory of 3056	2892	JaffaCakes118_0f69ae41b9672110400917971d3c4292.exe	32
PID 2892 wrote to memory of 3056	2892	JaffaCakes118_0f69ae41b9672110400917971d3c4292.exe	32
PID 2892 wrote to memory of 3056	2892	JaffaCakes118_0f69ae41b9672110400917971d3c4292.exe	32
PID 2892 wrote to memory of 3056	2892	JaffaCakes118_0f69ae41b9672110400917971d3c4292.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0f69ae41b9672110400917971d3c4292.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0f69ae41b9672110400917971d3c4292.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2892
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0f69ae41b9672110400917971d3c4292.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0f69ae41b9672110400917971d3c4292.exe startC:\Program Files (x86)\LP\832F\E62.exe%C:\Program Files (x86)\LP\832F
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2852
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0f69ae41b9672110400917971d3c4292.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0f69ae41b9672110400917971d3c4292.exe startC:\Program Files (x86)\94F5D\lvvm.exe%C:\Program Files (x86)\94F5D
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3056

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\FA894\4F5D.A89

Filesize
300B

MD5
9c18f7cc86bc721373745f862046e303

SHA1
2f3d9b82c4a6eab51c35cacae4ef469a0da66143

SHA256
49c75c8f77834b9f571691b6c314e84f3c62e79908317f74034186972fc70988

SHA512
f0205c407ebf8875090840e8a89e5ad92bedb75ee80a4b3301623ce1eaa1e98c38482f23ab8faef772a2e5c51c34b2d6abdce013388dc632651c0df6c5c07e62

Download Submit
C:\Users\Admin\AppData\Roaming\FA894\4F5D.A89

Filesize
996B

MD5
465eef8fcdcb0607b49c6a11b7178ede

SHA1
9aad41ac045982da8bc6a391d517ca44c50b77ee

SHA256
ca7d6fd991b1b8f00f0d23428858c4d91cc64e8db4e576f9cb5238d6ba75727e

SHA512
143000ef7cce7a32729c24c5fbb61cf73bd56547a66313cc274ae9d6f9afbeac768bd5e0dff9238f3a82534c5c77134cc645dc20d061691fe6406eb390691cc5

Download Submit
C:\Users\Admin\AppData\Roaming\FA894\4F5D.A89

Filesize
600B

MD5
89885274b215a5c2583d500265cb76f1

SHA1
6ef88b30b4ad570c68e6204f9727151f78c7a5ba

SHA256
10b176ead6ef319fcbf4a13a990fb8288a060db53c52d542a87cad7c110988a4

SHA512
7e6e066023366a6d983068c5281f3e8c2499d141febda4d58290bede7e5b95d5ab64d000fa7686ddb273bb8d4b64bdd1a5c407c4747f93384a6551d06e530961

Download Submit
C:\Users\Admin\AppData\Roaming\FA894\4F5D.A89

Filesize
1KB

MD5
fc071a5362c434a57706a3979cdf79e2

SHA1
3bfbdbefd74b71527736a1e128540df9bba9681a

SHA256
b04d0fa3702a8e765c691f01b2fe9ed71a193384bd0a973cfa996023f12974e1

SHA512
6feccd82817991e24b02f871e4ed82ad2b9648ccbba63e68d3e60a56e072df0775da593115601416e3373bb9ce853870a75e0248e9f2d4819e51760623c45cf3

Download Submit
memory/2852-13-0x0000000000590000-0x0000000000690000-memory.dmp

Filesize
1024KB

Download
memory/2852-16-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2852-17-0x00000000005D9000-0x00000000005E5000-memory.dmp

Filesize
48KB

Download
memory/2852-15-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2892-14-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2892-18-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2892-0-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2892-131-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2892-3-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2892-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2892-288-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3056-134-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads