cycbot | b2a0dc27945f178122b79c2afad14e4fe4a3232741703165e3a7ece31d4daebe

General

Target

fd3fa6e12fe9133773313ba9f08cbab2_JaffaCakes118.exe
Size

171KB
MD5

fd3fa6e12fe9133773313ba9f08cbab2
SHA1

75f336a7244aa3acf38201c4496d427fb750e8d7
SHA256

b2a0dc27945f178122b79c2afad14e4fe4a3232741703165e3a7ece31d4daebe
SHA512

271a98333e439cbacefd5ba994687d6616ff76ad27e2f0d156486733e79f4b20c41b04c1400e29a82fe9f09d60b94d570e71011a809cd46e391147b83773229b
SSDEEP

3072:QlAWWSspBqzrJUqnd/HY9JGQ11Or1qKAfdokTK/OF/kltwI7:vfbCrbnlaJDi1M5TdebwI

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
behavioral2/memory/5012-15-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral2/memory/1728-16-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral2/memory/1728-83-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral2/memory/396-86-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral2/memory/1728-189-0x0000000000400000-0x000000000048D000-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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\DD472\\98ED3.exe"	fd3fa6e12fe9133773313ba9f08cbab2_JaffaCakes118.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1728-2-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/5012-12-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/5012-13-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/5012-15-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/1728-16-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/1728-83-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/396-85-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/396-86-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/1728-189-0x0000000000400000-0x000000000048D000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 1 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	fd3fa6e12fe9133773313ba9f08cbab2_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1728 wrote to memory of 5012	1728	fd3fa6e12fe9133773313ba9f08cbab2_JaffaCakes118.exe	81
PID 1728 wrote to memory of 5012	1728	fd3fa6e12fe9133773313ba9f08cbab2_JaffaCakes118.exe	81
PID 1728 wrote to memory of 5012	1728	fd3fa6e12fe9133773313ba9f08cbab2_JaffaCakes118.exe	81
PID 1728 wrote to memory of 396	1728	fd3fa6e12fe9133773313ba9f08cbab2_JaffaCakes118.exe	87
PID 1728 wrote to memory of 396	1728	fd3fa6e12fe9133773313ba9f08cbab2_JaffaCakes118.exe	87
PID 1728 wrote to memory of 396	1728	fd3fa6e12fe9133773313ba9f08cbab2_JaffaCakes118.exe	87

C:\Users\Admin\AppData\Local\Temp\fd3fa6e12fe9133773313ba9f08cbab2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fd3fa6e12fe9133773313ba9f08cbab2_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1728
- C:\Users\Admin\AppData\Local\Temp\fd3fa6e12fe9133773313ba9f08cbab2_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\fd3fa6e12fe9133773313ba9f08cbab2_JaffaCakes118.exe startC:\Program Files (x86)\Internet Explorer\D3AD\B2B.exe%C:\Program Files (x86)\Internet Explorer\D3AD
  2⤵
  PID:5012
- C:\Users\Admin\AppData\Local\Temp\fd3fa6e12fe9133773313ba9f08cbab2_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\fd3fa6e12fe9133773313ba9f08cbab2_JaffaCakes118.exe startC:\Program Files (x86)\72789\lvvm.exe%C:\Program Files (x86)\72789
  2⤵
  PID:396

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\DD472\2789.D47

Filesize
1KB

MD5
fcce2d2d2c2e0ef496e1bb0037376893

SHA1
3bf55951ead824e9b8a3dcff9b0aae40e10d7f2c

SHA256
16a9de1ab5809e12474b604527ab8af20570e55c2ed118b9caedd617aa4791e4

SHA512
095621526cca7ba7d39698ccc28819a4667e24f3bf1d9bd2f40fde689701d4cf6cc9ea7f526d3363135ff612f4aa371bb6fe8ef35b21ddc20cd79402fc10e8a5

Download Submit
C:\Users\Admin\AppData\Roaming\DD472\2789.D47

Filesize
1KB

MD5
2b30635746e1441b1d536edc61dd6a79

SHA1
384608f014f7af64ad24771a85c13bd475874b7f

SHA256
2a33e862a99dfd934990ee074aa184e0d2f4ce6bddbe725312aab7816b45e402

SHA512
31ef7099336b8ff04d069356f2e210e0a8d7c855e72a2aa800cbab2ec0442064179ec7b2d0714c75113eeee244d565507cdf6a84ed2531bfd04ed0313c60ef41

Download Submit
C:\Users\Admin\AppData\Roaming\DD472\2789.D47

Filesize
600B

MD5
8e4239d1cfc7019fed72eb564813d53f

SHA1
4732c5534491d1fda76e69d3fedd6526cd72ee19

SHA256
dedb16f46380c3fbe597194d38d92536fc43fe511e0bbe7ed5b08bbe99776c20

SHA512
96bbf5d85a73a156022d0717618a86e59cead3497f2973707ff5ec1ad5670dc013f1be6dbaec7c3a546982ebd499169b79e6cadf64a6407cda45e76fdc8b2440

Download Submit
C:\Users\Admin\AppData\Roaming\DD472\2789.D47

Filesize
996B

MD5
17f26982b3c00692d4c169e858bb420a

SHA1
3d3b5b118002f535025397cd415d1aed38019852

SHA256
c0af47bf826d83b75147ec2d2009044aaad41b0e490cabcf56f72687a5d260df

SHA512
f0477dd80123b0ed27c302f49765d018ee992ba8d97a4eb7d74c1afcd4b844ddf8b2d5643edd6a611adeb1f083efc469130c8a1767769a3c550501dcf2796a7e

Download Submit
memory/396-86-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/396-85-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1728-16-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1728-83-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1728-1-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1728-2-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1728-189-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/5012-15-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/5012-13-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/5012-12-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads