cycbot | 18b9065b232496695fd20a276d2dba66c7b447f51ff39b89533a0593c68b6695

General

Target

JaffaCakes118_c4811f33bb31bc4384c3752163fa490a.exe
Size

165KB
MD5

c4811f33bb31bc4384c3752163fa490a
SHA1

ec2f433936d6754c95ad44a0314fd7e2b65e47d8
SHA256

18b9065b232496695fd20a276d2dba66c7b447f51ff39b89533a0593c68b6695
SHA512

d6d845d96f32dd98d1fe332d12c0655bc3630dbe4d7cdda5c15ac1b9e01e01d6651a5f22a3a5ea218ac454db7e41abe2adf2c1a5927ec5f17af8ad2b3c6287a0
SSDEEP

3072:l7nHIPOh6A3TGMdiK0W3EaYB5T9QNFFWXK1LH3dZkAR894kEoYQ9Y:lLHZ6AjGMdiK0WUJoYa1Lnkgv3oYq

Score

10^/10

cycbot backdoor discovery persistence rat 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
behavioral2/memory/2824-16-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/2916-19-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/2916-20-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/3048-138-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/2916-139-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/2916-325-0x0000000000400000-0x0000000000491000-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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\91C43\\71DA0.exe"	JaffaCakes118_c4811f33bb31bc4384c3752163fa490a.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2916-4-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/2824-16-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/2916-19-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/2916-20-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/3048-135-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/3048-138-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/2916-139-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/2916-325-0x0000000000400000-0x0000000000491000-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_c4811f33bb31bc4384c3752163fa490a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_c4811f33bb31bc4384c3752163fa490a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_c4811f33bb31bc4384c3752163fa490a.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2916 wrote to memory of 2824	2916	JaffaCakes118_c4811f33bb31bc4384c3752163fa490a.exe	86
PID 2916 wrote to memory of 2824	2916	JaffaCakes118_c4811f33bb31bc4384c3752163fa490a.exe	86
PID 2916 wrote to memory of 2824	2916	JaffaCakes118_c4811f33bb31bc4384c3752163fa490a.exe	86
PID 2916 wrote to memory of 3048	2916	JaffaCakes118_c4811f33bb31bc4384c3752163fa490a.exe	95
PID 2916 wrote to memory of 3048	2916	JaffaCakes118_c4811f33bb31bc4384c3752163fa490a.exe	95
PID 2916 wrote to memory of 3048	2916	JaffaCakes118_c4811f33bb31bc4384c3752163fa490a.exe	95

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c4811f33bb31bc4384c3752163fa490a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c4811f33bb31bc4384c3752163fa490a.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2916
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c4811f33bb31bc4384c3752163fa490a.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c4811f33bb31bc4384c3752163fa490a.exe startC:\Program Files (x86)\LP\A059\D7E.exe%C:\Program Files (x86)\LP\A059
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2824
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c4811f33bb31bc4384c3752163fa490a.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c4811f33bb31bc4384c3752163fa490a.exe startC:\Program Files (x86)\43D50\lvvm.exe%C:\Program Files (x86)\43D50
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3048

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

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\91C43\3D50.1C4

Filesize
996B

MD5
12b3abedad52606b4998f235123ec561

SHA1
c94ec3a5dcbb26418a8cb6fdcbcc207b09de6ef7

SHA256
79b160dc48181296e7cb0f59d2d7e121e1b5c75e655c1595a488290c70dc066d

SHA512
3e98d932706aaa8fadf391e38e20e39354f1f552ce3d76df43ac4f471fe15e7dc858dbdb708297d58a9b7b18f191691008e46544f6a5fb06a66f6da71efe0930

Download Submit
C:\Users\Admin\AppData\Roaming\91C43\3D50.1C4

Filesize
1KB

MD5
4021e23a64bb675d5d45b2b621523960

SHA1
7868ab8064fa25d9b6157601060ddf2249e4d14d

SHA256
cbe64d3419cc49b05185056ac6a50e8dd0897eee9f1ae60188d50126fba990d4

SHA512
c2b94a729dd6ff884c376aec9f3037e0ea26195078eedb8a75192d85701050fdbad6c9c7e48a8753ff1ab983f82af307e77a65cd881090aa4003352341442682

Download Submit
C:\Users\Admin\AppData\Roaming\91C43\3D50.1C4

Filesize
600B

MD5
64beca2124dd75dbc061d4646cf1e0b5

SHA1
59ff01457727d06bb2d7c67f2243e74d819e4be4

SHA256
b59164e5048bd3e300413d7afe336d15b0d2fa0d35d2cfdc1bce9b9cdced6e96

SHA512
a5a130326830588b3a59a46e47c22e8d20d48fa265c9b4d91b8e410fd410d1ec133daf031799644322a8ad00ad3a0231787ac9311bfc627350b0f8ea20a8f5cf

Download Submit
memory/2824-18-0x0000000075AE0000-0x0000000075B19000-memory.dmp

Filesize
228KB

Download
memory/2824-14-0x0000000075AE0000-0x0000000075B19000-memory.dmp

Filesize
228KB

Download
memory/2824-16-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2916-20-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2916-19-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2916-0-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2916-4-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2916-139-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2916-3-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2916-1-0x0000000075AE0000-0x0000000075B19000-memory.dmp

Filesize
228KB

Download
memory/2916-325-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2916-326-0x0000000075AE0000-0x0000000075B19000-memory.dmp

Filesize
228KB

Download
memory/3048-133-0x0000000075AE0000-0x0000000075B19000-memory.dmp

Filesize
228KB

Download
memory/3048-135-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3048-138-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3048-137-0x0000000075AE0000-0x0000000075B19000-memory.dmp

Filesize
228KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads