8718d05c0a04523ebf933d9aad5a212e54804adaf7c9f8464a3967ea4511f280

General

Target

8718d05c0a04523ebf933d9aad5a212e54804adaf7c9f8464a3967ea4511f280.exe
Size

160KB
MD5

a2ec665275cb47bb2d699c9b09bbacb0
SHA1

3dbf514d59f82b73de12945ee317eae7ad74695b
SHA256

8718d05c0a04523ebf933d9aad5a212e54804adaf7c9f8464a3967ea4511f280
SHA512

31f5deddd9f9017ac196614a9d28b9d7e6d9150ce971ca9a07aeb32c41e71f2fb92ef230a7bdd364e46f3e0c77d9fd67c1af8b4330e59d790608b9a032d3fa01
SSDEEP

3072:eqPL1/7w6ZAs+VBKxL7TURxZPQeQ6DHtsamoBz:rQVOTOZPQRIHrmoB

Score

8^/10

aspackv2 persistence upx

Malware Config

Signatures

ASPack v2.12-2.42 4 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x0006000000022e26-133.dat	aspack_v212_v242
behavioral2/files/0x0006000000022e26-134.dat	aspack_v212_v242
behavioral2/files/0x0007000000022e21-142.dat	aspack_v212_v242
behavioral2/files/0x0007000000022e21-141.dat	aspack_v212_v242

Executes dropped EXE 1 IoCs

pid	Process
4324	6f65076d.exe

Sets DLL path for service in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\FastUserSwitchingCompatibility\Parameters\ServiceDll = "C:\\Windows\\system32\\FastUserSwitchingCompatibility.dll"	6f65076d.exe

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0006000000022e26-133.dat	upx
behavioral2/files/0x0006000000022e26-134.dat	upx
behavioral2/memory/4324-135-0x0000000000520000-0x0000000000544000-memory.dmp	upx
behavioral2/memory/4324-136-0x0000000000520000-0x0000000000544000-memory.dmp	upx
behavioral2/memory/4324-138-0x0000000000520000-0x0000000000544000-memory.dmp	upx
behavioral2/files/0x0007000000022e21-142.dat	upx
behavioral2/files/0x0007000000022e21-141.dat	upx
behavioral2/memory/2084-143-0x0000000074F20000-0x0000000074F44000-memory.dmp	upx
behavioral2/memory/2084-146-0x0000000074F20000-0x0000000074F44000-memory.dmp	upx
behavioral2/memory/2084-144-0x0000000074F20000-0x0000000074F44000-memory.dmp	upx

Loads dropped DLL 1 IoCs

pid	Process
2084	Svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\06D50BC0.tmp	6f65076d.exe
File opened for modification	C:\Windows\SysWOW64\FastUserSwitchingCompatibility.dll	6f65076d.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4324	6f65076d.exe
4324	6f65076d.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4728 wrote to memory of 4324	4728	8718d05c0a04523ebf933d9aad5a212e54804adaf7c9f8464a3967ea4511f280.exe	81
PID 4728 wrote to memory of 4324	4728	8718d05c0a04523ebf933d9aad5a212e54804adaf7c9f8464a3967ea4511f280.exe	81
PID 4728 wrote to memory of 4324	4728	8718d05c0a04523ebf933d9aad5a212e54804adaf7c9f8464a3967ea4511f280.exe	81

C:\Users\Admin\AppData\Local\Temp\8718d05c0a04523ebf933d9aad5a212e54804adaf7c9f8464a3967ea4511f280.exe
"C:\Users\Admin\AppData\Local\Temp\8718d05c0a04523ebf933d9aad5a212e54804adaf7c9f8464a3967ea4511f280.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4728
- C:\6f65076d.exe
  C:\6f65076d.exe
  2⤵
  - Executes dropped EXE
  - Sets DLL path for service in the registry
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  PID:4324

C:\Windows\SysWOW64\Svchost.exe
C:\Windows\SysWOW64\Svchost.exe -k netsvcs -s FastUserSwitchingCompatibility
1⤵
- Loads dropped DLL
PID:2084

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\6f65076d.exe

Filesize
81KB

MD5
9df97113d4fb0462ca99208668d6102a

SHA1
2b769b8615735bea0592c73b16ebab7baeedca98

SHA256
9b0fa329aa52f505162bcaeb1bb3ca4ecb1543ec4a9640d7fe8f9fab7668d974

SHA512
c2b9b619f608ec561a81fc5532a47d876f3a4b092babe8d2524c7055ba922f3d85ca9932698b692850d767884e0cdebce39838b5fea9cb6177645c5bb6867a6a

Download Submit
C:\6f65076d.exe

Filesize
81KB

MD5
9df97113d4fb0462ca99208668d6102a

SHA1
2b769b8615735bea0592c73b16ebab7baeedca98

SHA256
9b0fa329aa52f505162bcaeb1bb3ca4ecb1543ec4a9640d7fe8f9fab7668d974

SHA512
c2b9b619f608ec561a81fc5532a47d876f3a4b092babe8d2524c7055ba922f3d85ca9932698b692850d767884e0cdebce39838b5fea9cb6177645c5bb6867a6a

Download Submit
C:\Users\Infotmp.txt

Filesize
720B

MD5
3af480d9e70688239ba11d3b00bb59b7

SHA1
dddb1284dffe50ac5b0fd6716f8b2a3c2c6ae3c9

SHA256
bb0c73bce441e9ae99fc4ccecdd28090d0f37c8d1949097cb190e3ec2b404aef

SHA512
64b66d29f5214967eeab30722161dd69c181b6d971a16e40ec1d8ad934996e474e70ee063d2d8fb8a538fed2ef232affad8c3e4b14fb0da4d024d0ff4cf94a72

Download Submit
C:\Windows\SysWOW64\FastUserSwitchingCompatibility.dll

Filesize
81KB

MD5
85b9df4b276647aa1170e21b5ce580a5

SHA1
081d4d7f83660724cbe256401870d7a2310bda12

SHA256
3b282419c0747296c11ea4ba8b92b775378fdb553e60900b61c8902864e7efeb

SHA512
ab0d70323bc470f2620659fa9a790ff1bc21cbbca6a642880414bea303c53feaee8743526005d43ce136ce7812c4cd1f26a843bd9be822341f98d39dc37b20f5

Download Submit
\??\c:\windows\SysWOW64\fastuserswitchingcompatibility.dll

Filesize
81KB

MD5
85b9df4b276647aa1170e21b5ce580a5

SHA1
081d4d7f83660724cbe256401870d7a2310bda12

SHA256
3b282419c0747296c11ea4ba8b92b775378fdb553e60900b61c8902864e7efeb

SHA512
ab0d70323bc470f2620659fa9a790ff1bc21cbbca6a642880414bea303c53feaee8743526005d43ce136ce7812c4cd1f26a843bd9be822341f98d39dc37b20f5

Download Submit
memory/2084-144-0x0000000074F20000-0x0000000074F44000-memory.dmp

Filesize
144KB

Download
memory/2084-146-0x0000000074F20000-0x0000000074F44000-memory.dmp

Filesize
144KB

Download
memory/2084-143-0x0000000074F20000-0x0000000074F44000-memory.dmp

Filesize
144KB

Download
memory/4324-136-0x0000000000520000-0x0000000000544000-memory.dmp

Filesize
144KB

Download
memory/4324-140-0x00000000028A0000-0x00000000068A0000-memory.dmp

Filesize
64.0MB

Download
memory/4324-139-0x00000000028A0000-0x00000000068A0000-memory.dmp

Filesize
64.0MB

Download
memory/4324-138-0x0000000000520000-0x0000000000544000-memory.dmp

Filesize
144KB

Download
memory/4324-135-0x0000000000520000-0x0000000000544000-memory.dmp

Filesize
144KB

Download
memory/4728-137-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/4728-147-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download

Analysis

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