0fc3a33196e96828b2855c78b84ecac050535a2fcbf0a84db3d0925e120fab00

Analysis

max time kernel
168s
max time network
141s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
25/12/2023, 12:53

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General

Target

20011bd3c31203ba0c8601873099e09c.exe
Size

1.1MB
MD5

20011bd3c31203ba0c8601873099e09c
SHA1

d1878d02f3ae76fdd5ed8d53df784dc4223e7251
SHA256

0fc3a33196e96828b2855c78b84ecac050535a2fcbf0a84db3d0925e120fab00
SHA512

985086155ca19b4ce4d46894318fb335543d6651614ba5a92882a3a61814053264ed2c539cad98ea84d84a62b39c6cc37acffd421220f51c0636e0671bb7f72e
SSDEEP

12288:5MMpXKb0hNGh1kG0HWnAL7MMpXKb0hNGh1kG0HWnALt0:5MMpXS0hN0V0H7MMpXS0hN0V0H2

Score

10^/10

aspackv2 persistence ransomware

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe HelpMe.exe"	HelpMe.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe HelpMe.exe"	20011bd3c31203ba0c8601873099e09c.exe

Renames multiple (91) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

ASPack v2.12-2.42 3 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral1/files/0x000b0000000132dc-2.dat	aspack_v212_v242
behavioral1/files/0x0030000000016609-38.dat	aspack_v212_v242
behavioral1/files/0x0001000000000026-53.dat	aspack_v212_v242

Drops startup file 3 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk	HelpMe.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk	20011bd3c31203ba0c8601873099e09c.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk	20011bd3c31203ba0c8601873099e09c.exe

Executes dropped EXE 1 IoCs

pid	Process
2704	HelpMe.exe

Loads dropped DLL 2 IoCs

pid	Process
2860	20011bd3c31203ba0c8601873099e09c.exe
2860	20011bd3c31203ba0c8601873099e09c.exe

Enumerates connected drives 3 TTPs 46 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)	\??\O:	20011bd3c31203ba0c8601873099e09c.exe
File opened (read-only)	\??\A:	HelpMe.exe
File opened (read-only)	\??\E:	HelpMe.exe
File opened (read-only)	\??\R:	HelpMe.exe
File opened (read-only)	\??\U:	HelpMe.exe
File opened (read-only)	\??\X:	HelpMe.exe
File opened (read-only)	\??\B:	20011bd3c31203ba0c8601873099e09c.exe
File opened (read-only)	\??\E:	20011bd3c31203ba0c8601873099e09c.exe
File opened (read-only)	\??\U:	20011bd3c31203ba0c8601873099e09c.exe
File opened (read-only)	\??\K:	HelpMe.exe
File opened (read-only)	\??\Y:	HelpMe.exe
File opened (read-only)	\??\Y:	20011bd3c31203ba0c8601873099e09c.exe
File opened (read-only)	\??\Z:	20011bd3c31203ba0c8601873099e09c.exe
File opened (read-only)	\??\J:	HelpMe.exe
File opened (read-only)	\??\V:	HelpMe.exe
File opened (read-only)	\??\I:	HelpMe.exe
File opened (read-only)	\??\N:	20011bd3c31203ba0c8601873099e09c.exe
File opened (read-only)	\??\P:	20011bd3c31203ba0c8601873099e09c.exe
File opened (read-only)	\??\R:	20011bd3c31203ba0c8601873099e09c.exe
File opened (read-only)	\??\T:	20011bd3c31203ba0c8601873099e09c.exe
File opened (read-only)	\??\M:	HelpMe.exe
File opened (read-only)	\??\Z:	HelpMe.exe
File opened (read-only)	\??\G:	20011bd3c31203ba0c8601873099e09c.exe
File opened (read-only)	\??\Q:	20011bd3c31203ba0c8601873099e09c.exe
File opened (read-only)	\??\S:	20011bd3c31203ba0c8601873099e09c.exe
File opened (read-only)	\??\W:	20011bd3c31203ba0c8601873099e09c.exe
File opened (read-only)	\??\B:	HelpMe.exe
File opened (read-only)	\??\N:	HelpMe.exe
File opened (read-only)	\??\O:	HelpMe.exe
File opened (read-only)	\??\P:	HelpMe.exe
File opened (read-only)	\??\A:	20011bd3c31203ba0c8601873099e09c.exe
File opened (read-only)	\??\I:	20011bd3c31203ba0c8601873099e09c.exe
File opened (read-only)	\??\L:	20011bd3c31203ba0c8601873099e09c.exe
File opened (read-only)	\??\X:	20011bd3c31203ba0c8601873099e09c.exe
File opened (read-only)	\??\T:	HelpMe.exe
File opened (read-only)	\??\W:	HelpMe.exe
File opened (read-only)	\??\Q:	HelpMe.exe
File opened (read-only)	\??\S:	HelpMe.exe
File opened (read-only)	\??\H:	20011bd3c31203ba0c8601873099e09c.exe
File opened (read-only)	\??\M:	20011bd3c31203ba0c8601873099e09c.exe
File opened (read-only)	\??\G:	HelpMe.exe
File opened (read-only)	\??\L:	HelpMe.exe
File opened (read-only)	\??\J:	20011bd3c31203ba0c8601873099e09c.exe
File opened (read-only)	\??\K:	20011bd3c31203ba0c8601873099e09c.exe
File opened (read-only)	\??\V:	20011bd3c31203ba0c8601873099e09c.exe
File opened (read-only)	\??\H:	HelpMe.exe

Drops autorun.inf file 1 TTPs 3 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

description	ioc	Process
File opened for modification	F:\AUTORUN.INF	HelpMe.exe
File opened for modification	F:\AUTORUN.INF	20011bd3c31203ba0c8601873099e09c.exe
File opened for modification	C:\AUTORUN.INF	20011bd3c31203ba0c8601873099e09c.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\HelpMe.exe	20011bd3c31203ba0c8601873099e09c.exe
File created	C:\Windows\SysWOW64\HelpMe.exe	HelpMe.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2860 wrote to memory of 2704	2860	20011bd3c31203ba0c8601873099e09c.exe	29
PID 2860 wrote to memory of 2704	2860	20011bd3c31203ba0c8601873099e09c.exe	29
PID 2860 wrote to memory of 2704	2860	20011bd3c31203ba0c8601873099e09c.exe	29
PID 2860 wrote to memory of 2704	2860	20011bd3c31203ba0c8601873099e09c.exe	29

C:\Users\Admin\AppData\Local\Temp\20011bd3c31203ba0c8601873099e09c.exe
"C:\Users\Admin\AppData\Local\Temp\20011bd3c31203ba0c8601873099e09c.exe"
1⤵
- Modifies WinLogon for persistence
- Drops startup file
- Loads dropped DLL
- Enumerates connected drives
- Drops autorun.inf file
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2860
- C:\Windows\SysWOW64\HelpMe.exe
  C:\Windows\system32\HelpMe.exe
  2⤵
  - Modifies WinLogon for persistence
  - Drops startup file
  - Executes dropped EXE
  - Enumerates connected drives
  - Drops autorun.inf file
  - Drops file in System32 directory
  PID:2704

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

T1091

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Replication Through Removable Media

T1091

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\$Recycle.Bin\S-1-5-21-1603059206-2004189698-4139800220-1000\desktop.ini.exe

Filesize
1.1MB

MD5
d2cd1fc1d16538b06acfd93c6b41d110

SHA1
a9ba996506f64d77cb0927d926f3cc0474842785

SHA256
a21a6c12bd8fe3e7867cc88c4d4c9d9aa22c9de7786054f6a35942840c685466

SHA512
ea9bf469804eed25277b45df55f535ac5cea3ec0e9b2fb42cde957013badd076be44d29a7771bd76fc9b323736c3f369b96d2eb6078768aac463e2959d0d52d4

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk

Filesize
954B

MD5
3be5c2263184c623843b54190cc65a2a

SHA1
4904be422e5dcec69f2a64058bb3feceb6113b8e

SHA256
96c38df266a9f3dce2fcb5fecf6296ee6d22c251dfc089cccd2e8357ec3a8619

SHA512
e4ee9e31336042501e8e6232712877e02176f598c69a6259764b057963e7d09672899354e95f61e7133310d06d57a7159ad75345e4dc9ab839898e6c15f30329

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk

Filesize
1KB

MD5
4f9236fb932790ee5ddb43e7fdf064d8

SHA1
b02ccd6fef1414956648bc643261ae62576592b9

SHA256
569dc7cf5e2c7dac42a9a8c721962443a88157f28ae0dc4ce5e1a539e5cfe2af

SHA512
8b2e6443492628cbaa6f962ee3088a8fb6bfe78d4ccdf7d8ae7e2a78fedd65ccb3aa6010daa033e96a7d303ab6ed33c5bf98523aaf61ae38edc65d1893b286b7

Download Submit
F:\AUTORUN.INF

Filesize
145B

MD5
ca13857b2fd3895a39f09d9dde3cca97

SHA1
8b78c5b2ec97c372ebdcef92d14b0998f8dd6dd0

SHA256
cfe448b4506a95b33b529efa88f1ac704d8bdf98a941c065650ead27609318ae

SHA512
55e5b5325968d1e5314527fb2d26012f5aae4a1c38e305417be273400cb1c6d0c22b85bddb501d7a5720a3f53bb5caf6ada8a7894232344c4f6c6ef85d226b47

Download Submit
F:\AutoRun.exe

Filesize
1.1MB

MD5
20011bd3c31203ba0c8601873099e09c

SHA1
d1878d02f3ae76fdd5ed8d53df784dc4223e7251

SHA256
0fc3a33196e96828b2855c78b84ecac050535a2fcbf0a84db3d0925e120fab00

SHA512
985086155ca19b4ce4d46894318fb335543d6651614ba5a92882a3a61814053264ed2c539cad98ea84d84a62b39c6cc37acffd421220f51c0636e0671bb7f72e

Download Submit
\Windows\SysWOW64\HelpMe.exe

Filesize
1.1MB

MD5
8dcf1d3cf8a65044536cf9dc94062acc

SHA1
1aeedf58783fab1904ccac3b7f2216925d2f9612

SHA256
3622ddcb572a10fd37cc0ec4c5d679755a41cefb03c41e479372c5752a7039f0

SHA512
c3df6e664d338b59279919a8769a91b3359bcb2ab0fd5c303b6b5140867e6063e9ebfbbecab1e400f32da17cdb8f95a7f40941ff6b3a159c0ef3ec9c559e4c5f

Download Submit
memory/2704-9-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2704-86-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2860-0-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads