baf809cac16d47406b54e75c6605edb309e4d17aaf3366e4d450dbd9d2d79a39

General

Target

baf809cac16d47406b54e75c6605edb309e4d17aaf3366e4d450dbd9d2d79a39.exe
Size

20KB
MD5

6eef2913e9aefba94cf1ec1ca5520d8e
SHA1

6805be988c192a166a6aa94ef5c80983c9c233ac
SHA256

baf809cac16d47406b54e75c6605edb309e4d17aaf3366e4d450dbd9d2d79a39
SHA512

0191a8fad7c9d84add6e8e677d012346afc5ba3a3e49ebfa5b96ea0edea96c07b1b71f4e8c6c7faf88108ccec354ed507568013077de0a9308a6a633467b3921
SSDEEP

384:zHz6AWjDlSWUYjI0KqJC7aUiZH2z+jcbk4WhrhUaAjjJZM:Hbc1jI0KqJdUiZH2QKk4mVUag

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1704	vcflye.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1008-55-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral1/files/0x00140000000054ab-56.dat	upx
behavioral1/files/0x00140000000054ab-60.dat	upx
behavioral1/memory/1704-62-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral1/memory/1704-63-0x0000000000400000-0x0000000000410000-memory.dmp	upx

Deletes itself 1 IoCs

pid	Process
844	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
1704	vcflye.exe

Enumerates connected drives 3 TTPs 22 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\Y:	vcflye.exe
File opened (read-only)	\??\F:	vcflye.exe
File opened (read-only)	\??\G:	vcflye.exe
File opened (read-only)	\??\O:	vcflye.exe
File opened (read-only)	\??\T:	vcflye.exe
File opened (read-only)	\??\W:	vcflye.exe
File opened (read-only)	\??\R:	vcflye.exe
File opened (read-only)	\??\S:	vcflye.exe
File opened (read-only)	\??\V:	vcflye.exe
File opened (read-only)	\??\H:	vcflye.exe
File opened (read-only)	\??\I:	vcflye.exe
File opened (read-only)	\??\L:	vcflye.exe
File opened (read-only)	\??\P:	vcflye.exe
File opened (read-only)	\??\Q:	vcflye.exe
File opened (read-only)	\??\J:	vcflye.exe
File opened (read-only)	\??\M:	vcflye.exe
File opened (read-only)	\??\U:	vcflye.exe
File opened (read-only)	\??\Z:	vcflye.exe
File opened (read-only)	\??\E:	vcflye.exe
File opened (read-only)	\??\K:	vcflye.exe
File opened (read-only)	\??\N:	vcflye.exe
File opened (read-only)	\??\X:	vcflye.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\hra33.dll	vcflye.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\7-Zip\lpk.dll	vcflye.exe
File opened for modification	C:\Program Files\7-Zip\lpk.dll	vcflye.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\vcflye.exe	baf809cac16d47406b54e75c6605edb309e4d17aaf3366e4d450dbd9d2d79a39.exe
File opened for modification	C:\Windows\vcflye.exe	baf809cac16d47406b54e75c6605edb309e4d17aaf3366e4d450dbd9d2d79a39.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1008	baf809cac16d47406b54e75c6605edb309e4d17aaf3366e4d450dbd9d2d79a39.exe
Token: SeIncBasePriorityPrivilege	1008	baf809cac16d47406b54e75c6605edb309e4d17aaf3366e4d450dbd9d2d79a39.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1008 wrote to memory of 1784	1008	baf809cac16d47406b54e75c6605edb309e4d17aaf3366e4d450dbd9d2d79a39.exe	29
PID 1008 wrote to memory of 1784	1008	baf809cac16d47406b54e75c6605edb309e4d17aaf3366e4d450dbd9d2d79a39.exe	29
PID 1008 wrote to memory of 1784	1008	baf809cac16d47406b54e75c6605edb309e4d17aaf3366e4d450dbd9d2d79a39.exe	29
PID 1008 wrote to memory of 1784	1008	baf809cac16d47406b54e75c6605edb309e4d17aaf3366e4d450dbd9d2d79a39.exe	29
PID 1008 wrote to memory of 844	1008	baf809cac16d47406b54e75c6605edb309e4d17aaf3366e4d450dbd9d2d79a39.exe	31
PID 1008 wrote to memory of 844	1008	baf809cac16d47406b54e75c6605edb309e4d17aaf3366e4d450dbd9d2d79a39.exe	31
PID 1008 wrote to memory of 844	1008	baf809cac16d47406b54e75c6605edb309e4d17aaf3366e4d450dbd9d2d79a39.exe	31
PID 1008 wrote to memory of 844	1008	baf809cac16d47406b54e75c6605edb309e4d17aaf3366e4d450dbd9d2d79a39.exe	31

C:\Users\Admin\AppData\Local\Temp\baf809cac16d47406b54e75c6605edb309e4d17aaf3366e4d450dbd9d2d79a39.exe
"C:\Users\Admin\AppData\Local\Temp\baf809cac16d47406b54e75c6605edb309e4d17aaf3366e4d450dbd9d2d79a39.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1008
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\BAF809~1.EXE > nul
  2⤵
  PID:1784
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\BAF809~1.EXE > nul
  2⤵
  - Deletes itself
  PID:844

C:\Windows\vcflye.exe
C:\Windows\vcflye.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Enumerates connected drives
- Drops file in System32 directory
- Drops file in Program Files directory
PID:1704

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\vcflye.exe

Filesize
20KB

MD5
6eef2913e9aefba94cf1ec1ca5520d8e

SHA1
6805be988c192a166a6aa94ef5c80983c9c233ac

SHA256
baf809cac16d47406b54e75c6605edb309e4d17aaf3366e4d450dbd9d2d79a39

SHA512
0191a8fad7c9d84add6e8e677d012346afc5ba3a3e49ebfa5b96ea0edea96c07b1b71f4e8c6c7faf88108ccec354ed507568013077de0a9308a6a633467b3921

Download Submit
C:\Windows\vcflye.exe

Filesize
20KB

MD5
6eef2913e9aefba94cf1ec1ca5520d8e

SHA1
6805be988c192a166a6aa94ef5c80983c9c233ac

SHA256
baf809cac16d47406b54e75c6605edb309e4d17aaf3366e4d450dbd9d2d79a39

SHA512
0191a8fad7c9d84add6e8e677d012346afc5ba3a3e49ebfa5b96ea0edea96c07b1b71f4e8c6c7faf88108ccec354ed507568013077de0a9308a6a633467b3921

Download Submit
\Windows\SysWOW64\hra33.dll

Filesize
29KB

MD5
8653601350c2d4875eec9b4a222e7b3d

SHA1
fa309c7bb25912814812e7bbcd36ed10161b36e4

SHA256
c0cca2926096435b9fa60d04bfa7516194695d66ba937c79e564080ce27d48fd

SHA512
f4aa8e1a82d146a0fb786796ba8feed1d77bc4135108740c29fcf9a532156a8f95a2e46e1f0892f3610a5ef31677a14adad85cfdacbeaeb1b2d5355652c77c95

Download Submit
memory/1008-54-0x0000000075C51000-0x0000000075C53000-memory.dmp

Filesize
8KB

Download
memory/1008-55-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1704-62-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1704-63-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download

Analysis

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