cycbot | 951677e5e060889594c56b7796165c3557face45c6dc2fb1b065b780ee6852bb

General

Target

JaffaCakes118_9f993c22b1d577ae0dd42ffc6d30d821.exe
Size

180KB
MD5

9f993c22b1d577ae0dd42ffc6d30d821
SHA1

ea81a06adc46bc7d942c07a0d0c8633a5393d186
SHA256

951677e5e060889594c56b7796165c3557face45c6dc2fb1b065b780ee6852bb
SHA512

ba3c6c1391100700c1ac80f716b2608b1847232e568aa18320a49044aa6729cf4a245e875ce2026801255146fe6339b111d6be3a4b1eddb5b4c47dc9965a88ba
SSDEEP

3072:vUi3JJZz3ATLiL45Z8JeEQh8scgSYwjQj2uJh0yr/sX7:8iBjATLiL45Zph8sLp0

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 5 IoCs

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

resource	yara_rule
behavioral1/memory/3156-14-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/5336-48-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/5336-107-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/1356-112-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/5336-190-0x0000000000400000-0x000000000046E000-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-1-5-21-308834014-1004923324-1191300197-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_9f993c22b1d577ae0dd42ffc6d30d821.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/5336-2-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/3156-12-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/3156-14-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/5336-48-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/5336-107-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1356-110-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1356-112-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/5336-190-0x0000000000400000-0x000000000046E000-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_9f993c22b1d577ae0dd42ffc6d30d821.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_9f993c22b1d577ae0dd42ffc6d30d821.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_9f993c22b1d577ae0dd42ffc6d30d821.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5336 wrote to memory of 3156	5336	JaffaCakes118_9f993c22b1d577ae0dd42ffc6d30d821.exe	89
PID 5336 wrote to memory of 3156	5336	JaffaCakes118_9f993c22b1d577ae0dd42ffc6d30d821.exe	89
PID 5336 wrote to memory of 3156	5336	JaffaCakes118_9f993c22b1d577ae0dd42ffc6d30d821.exe	89
PID 5336 wrote to memory of 1356	5336	JaffaCakes118_9f993c22b1d577ae0dd42ffc6d30d821.exe	100
PID 5336 wrote to memory of 1356	5336	JaffaCakes118_9f993c22b1d577ae0dd42ffc6d30d821.exe	100
PID 5336 wrote to memory of 1356	5336	JaffaCakes118_9f993c22b1d577ae0dd42ffc6d30d821.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9f993c22b1d577ae0dd42ffc6d30d821.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9f993c22b1d577ae0dd42ffc6d30d821.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5336
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9f993c22b1d577ae0dd42ffc6d30d821.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9f993c22b1d577ae0dd42ffc6d30d821.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3156
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9f993c22b1d577ae0dd42ffc6d30d821.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9f993c22b1d577ae0dd42ffc6d30d821.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1356

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\0E5C.57F

Filesize
996B

MD5
f633244deeedf72be9baaedb6638243d

SHA1
f9b51ec5d924ffab714eaed76912082e398bcf40

SHA256
eb0dd3c765188ea0d8d2da91284cc03d762e6b495d5d668355a7cc9ac6b76648

SHA512
c8887e3395c2522f8fb1b065a0505d49b64f480757a9785927226bec6ab056a6c2ee416e1a9564aa291c9eeb4536319a5d9073fb2390ff9c0924dfd99530c979

Download Submit
C:\Users\Admin\AppData\Roaming\0E5C.57F

Filesize
600B

MD5
caa3e25e4974c41a08786f1010110898

SHA1
d4fed909c4866d3fc9bbe18a5c7467a365ed6f60

SHA256
3a1e0f6f0c18e59b2d1595f49d7a22d2caa48952766f985bd9621adc495eb139

SHA512
6469ddd614d160d996cba62ccc0b04ea29295da374c91ebe7aa7f160acdf86c2bd60a5d2a30e5559092ca025b8d18f4f36c6d8a6acf3e9440f8f7c93b78ef9da

Download Submit
C:\Users\Admin\AppData\Roaming\0E5C.57F

Filesize
1KB

MD5
7c341fdca8170582391cc16cfe6e59b0

SHA1
21ed244797325ecdc04b936a16e1ef9c568960be

SHA256
b52c5c6a75a66e8fb042cc742c5a292372eb707bbdf9037cd9932d24a545606c

SHA512
185ffb14afd1ba266f6ee7001bc68eacce3932cedfd51f908fc98c6256b4971d323e87410a3694dcaf01029be5b4aca79bed5dffbd9ab80a0489f88931f2011c

Download Submit
memory/1356-110-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1356-109-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1356-112-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3156-14-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3156-12-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/5336-48-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/5336-107-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/5336-1-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/5336-2-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/5336-190-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads