blister | f9508e81f1ac31569646fde9e864e25212457ca62ac768e23fbb95c290950e99

Analysis

max time kernel
73s
max time network
43s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
05-09-2022 15:53

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General

Target

b91eb833de386ea3d73d2954f0dce9fe38e4bf96594620af6c0935b9ee0d7e81.exe
Size

730KB
MD5

fb22207876c27361a84dd83ebb73ad0b
SHA1

7c9ec0647cf3dafba2e4e2d7f559cae1e92bbf57
SHA256

b91eb833de386ea3d73d2954f0dce9fe38e4bf96594620af6c0935b9ee0d7e81
SHA512

c8301e0e47ee3c3155ed5047328538a1f6a5b9de8c01b63d10efb5bfef16d2aa9b70f69a6c1dd6255b87e7b42c50af3a8a9d671e06d4d567ac8c9e4af8f8d013
SSDEEP

12288:9sOol4XixHibVqWMl2Vm6d5cx4tpE3oDY1bDRwn87cLHQo4zLXBFG0r74YLtlh:9yniZqRud5ptpNiDyn4Z3XX7IOH

Score

10^/10

blister loader

Malware Config

Signatures

BLISTER
BLISTER is a downloader used to deliver other malware families.
loader blister

Detect Blister loader x32 4 IoCs

loader

resource	yara_rule
behavioral13/files/0x000a0000000135a6-56.dat	family_blister_x32
behavioral13/files/0x000a0000000135a6-59.dat	family_blister_x32
behavioral13/files/0x000a0000000135a6-60.dat	family_blister_x32
behavioral13/memory/1288-61-0x0000000017170000-0x000000001724D000-memory.dmp	family_blister_x32

Loads dropped DLL 2 IoCs

pid	Process
1288	rundll32.exe
1288	rundll32.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 WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1708 wrote to memory of 912	1708	b91eb833de386ea3d73d2954f0dce9fe38e4bf96594620af6c0935b9ee0d7e81.exe	26
PID 1708 wrote to memory of 912	1708	b91eb833de386ea3d73d2954f0dce9fe38e4bf96594620af6c0935b9ee0d7e81.exe	26
PID 1708 wrote to memory of 912	1708	b91eb833de386ea3d73d2954f0dce9fe38e4bf96594620af6c0935b9ee0d7e81.exe	26
PID 912 wrote to memory of 1288	912	Rundll32.exe	27
PID 912 wrote to memory of 1288	912	Rundll32.exe	27
PID 912 wrote to memory of 1288	912	Rundll32.exe	27
PID 912 wrote to memory of 1288	912	Rundll32.exe	27
PID 912 wrote to memory of 1288	912	Rundll32.exe	27
PID 912 wrote to memory of 1288	912	Rundll32.exe	27
PID 912 wrote to memory of 1288	912	Rundll32.exe	27

C:\Users\Admin\AppData\Local\Temp\b91eb833de386ea3d73d2954f0dce9fe38e4bf96594620af6c0935b9ee0d7e81.exe
"C:\Users\Admin\AppData\Local\Temp\b91eb833de386ea3d73d2954f0dce9fe38e4bf96594620af6c0935b9ee0d7e81.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1708
- C:\Windows\system32\Rundll32.exe
  Rundll32.exe C:\Users\Admin\AppData\Local\Temp\Helper.CC\Helper.CC.dll,LaunchColorCpl
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:912
- - C:\Windows\SysWOW64\rundll32.exe
    Rundll32.exe C:\Users\Admin\AppData\Local\Temp\Helper.CC\Helper.CC.dll,LaunchColorCpl
    3⤵
    - Loads dropped DLL
    PID:1288

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Helper.CC\Helper.CC.dll

Filesize
871KB

MD5
672780f51dca49d1654c0373eeba74c4

SHA1
90bb4a455e7141af504a66917aa417fcd2b96d6b

SHA256
44e5770751679f178f90ef7bd57e8e4ccfb6051767d8e906708c52184bf27f32

SHA512
bbcd4e0f6c00a113927abd36431f513f569bf75c29b457325b1c0572fac0d1829a1c10bf1842d86ae59339673e1c3a4d2344fb0126dcd27c31f4458eaf8ae697

Download Submit
\Users\Admin\AppData\Local\Temp\Helper.CC\Helper.CC.dll

Filesize
871KB

MD5
672780f51dca49d1654c0373eeba74c4

SHA1
90bb4a455e7141af504a66917aa417fcd2b96d6b

SHA256
44e5770751679f178f90ef7bd57e8e4ccfb6051767d8e906708c52184bf27f32

SHA512
bbcd4e0f6c00a113927abd36431f513f569bf75c29b457325b1c0572fac0d1829a1c10bf1842d86ae59339673e1c3a4d2344fb0126dcd27c31f4458eaf8ae697

Download Submit
\Users\Admin\AppData\Local\Temp\Helper.CC\Helper.CC.dll

Filesize
871KB

MD5
672780f51dca49d1654c0373eeba74c4

SHA1
90bb4a455e7141af504a66917aa417fcd2b96d6b

SHA256
44e5770751679f178f90ef7bd57e8e4ccfb6051767d8e906708c52184bf27f32

SHA512
bbcd4e0f6c00a113927abd36431f513f569bf75c29b457325b1c0572fac0d1829a1c10bf1842d86ae59339673e1c3a4d2344fb0126dcd27c31f4458eaf8ae697

Download Submit
memory/1288-58-0x0000000076681000-0x0000000076683000-memory.dmp

Filesize
8KB

Download
memory/1288-61-0x0000000017170000-0x000000001724D000-memory.dmp

Filesize
884KB

Download
memory/1708-54-0x000007FEFBD91000-0x000007FEFBD93000-memory.dmp

Filesize
8KB

Download