cd19444be4a8c54e6726ca6e7c58e0d27aec8965875e80af8e12efbc05181738

General

Target

cd19444be4a8c54e6726ca6e7c58e0d27aec8965875e80af8e12efbc05181738.exe
Size

292KB
MD5

ec376f278fc32f3cc854146ee505ab1d
SHA1

5281e281fe01be13a69c5450984b7116e21a2bee
SHA256

cd19444be4a8c54e6726ca6e7c58e0d27aec8965875e80af8e12efbc05181738
SHA512

ee5dc4dfdddca1a80fd95c89d0469a0287a5b214bab5231596c9e3273679a9e9e98744cc8a259eb8b1c2cd18217d20392f8b9451537d243b27565f8c62873613
SSDEEP

6144:sN+HTr4epupf3/4YIJ8m1MxUyRzoVOBlYQflIGo:sNgrZgP4BJTM6++OBlYERo

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

Processes:

resource	yara_rule
C:\47f119b0.exe	aspack_v212_v242
C:\47f119b0.exe	aspack_v212_v242
\??\c:\windows\SysWOW64\fastuserswitchingcompatibility.dll	aspack_v212_v242
C:\Windows\SysWOW64\FastUserSwitchingCompatibility.dll	aspack_v212_v242

Executes dropped EXE 1 IoCs

Processes:

47f119b0.exe

pid process

2148 47f119b0.exe

pid	process
2148	47f119b0.exe

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

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

47f119b0.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\FastUserSwitchingCompatibility\Parameters\ServiceDll = "C:\\Windows\\system32\\FastUserSwitchingCompatibility.dll"	47f119b0.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Ias\Parameters\ServiceDll = "C:\\Windows\\system32\\Ias.dll"	47f119b0.exe

UPX packed file 11 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/3524-132-0x0000000000400000-0x0000000000460000-memory.dmp	upx
C:\47f119b0.exe	upx
C:\47f119b0.exe	upx
behavioral2/memory/2148-136-0x00000000008B0000-0x00000000008FE000-memory.dmp	upx
behavioral2/memory/2148-137-0x00000000008B0000-0x00000000008FE000-memory.dmp	upx
behavioral2/memory/2148-138-0x00000000008B0000-0x00000000008FE000-memory.dmp	upx
\??\c:\windows\SysWOW64\fastuserswitchingcompatibility.dll	upx
C:\Windows\SysWOW64\FastUserSwitchingCompatibility.dll	upx
behavioral2/memory/4284-141-0x0000000075260000-0x00000000752AE000-memory.dmp	upx
behavioral2/memory/4284-142-0x0000000075260000-0x00000000752AE000-memory.dmp	upx
behavioral2/memory/4284-143-0x0000000075260000-0x00000000752AE000-memory.dmp	upx

Loads dropped DLL 1 IoCs

Processes:

svchost.exe

pid process

4284 svchost.exe
Drops file in System32 directory 1 IoCs

Processes:

47f119b0.exe

description ioc process

File opened for modification C:\Windows\SysWOW64\FastUserSwitchingCompatibility.dll 47f119b0.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

47f119b0.exe

pid process

2148 47f119b0.exe
2148 47f119b0.exe

pid	process
4284	svchost.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\FastUserSwitchingCompatibility.dll	47f119b0.exe

pid	process
2148	47f119b0.exe
2148	47f119b0.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

cd19444be4a8c54e6726ca6e7c58e0d27aec8965875e80af8e12efbc05181738.exe

description	pid	process	target process
PID 3524 wrote to memory of 2148	3524	cd19444be4a8c54e6726ca6e7c58e0d27aec8965875e80af8e12efbc05181738.exe	47f119b0.exe
PID 3524 wrote to memory of 2148	3524	cd19444be4a8c54e6726ca6e7c58e0d27aec8965875e80af8e12efbc05181738.exe	47f119b0.exe
PID 3524 wrote to memory of 2148	3524	cd19444be4a8c54e6726ca6e7c58e0d27aec8965875e80af8e12efbc05181738.exe	47f119b0.exe

C:\Users\Admin\AppData\Local\Temp\cd19444be4a8c54e6726ca6e7c58e0d27aec8965875e80af8e12efbc05181738.exe
"C:\Users\Admin\AppData\Local\Temp\cd19444be4a8c54e6726ca6e7c58e0d27aec8965875e80af8e12efbc05181738.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3524

C:\47f119b0.exe
C:\47f119b0.exe
2⤵
- Executes dropped EXE
- Sets DLL path for service in the registry
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
PID:2148

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs -s FastUserSwitchingCompatibility
1⤵
- Loads dropped DLL
PID:4284

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:\47f119b0.exe

Filesize
240KB

MD5
f5d2a6e81cd9b23d4899371b296b8a8c

SHA1
7b095e73b522c5a1b12e26ae389464c5c123bc8e

SHA256
775082343ef68119bf9bf671c677c981b68ed6f627ff5b8b4de414e2e9d29a42

SHA512
77842aae633daac864c148fdc5d40b22cc1dc9e3e0c0e81df7694d2c6e95bfb02bc18bb34c047bbf4b12dc24d14eb1b89acf75f43f547e311fe63730b6a54662

Download Submit
C:\47f119b0.exe

Filesize
240KB

MD5
f5d2a6e81cd9b23d4899371b296b8a8c

SHA1
7b095e73b522c5a1b12e26ae389464c5c123bc8e

SHA256
775082343ef68119bf9bf671c677c981b68ed6f627ff5b8b4de414e2e9d29a42

SHA512
77842aae633daac864c148fdc5d40b22cc1dc9e3e0c0e81df7694d2c6e95bfb02bc18bb34c047bbf4b12dc24d14eb1b89acf75f43f547e311fe63730b6a54662

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

Filesize
240KB

MD5
e48f830a89ba95daf7650bb9b05bd117

SHA1
304e6666ad4a8e0329f7aa4646c34c5fe57d19fe

SHA256
046338af97e20aaf13aa5aa3c550a139a5f41ee3f22592497ab1f9b7c82786c6

SHA512
a462bea2fedd9135dd9b226b5b20cfd8172581d03b2c06acae4018ba8fba1c1e5f2d68f7e0ff860fd9269a02e36cc6c59e33b8c02f8168cd83e674ee074b3095

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

Filesize
240KB

MD5
e48f830a89ba95daf7650bb9b05bd117

SHA1
304e6666ad4a8e0329f7aa4646c34c5fe57d19fe

SHA256
046338af97e20aaf13aa5aa3c550a139a5f41ee3f22592497ab1f9b7c82786c6

SHA512
a462bea2fedd9135dd9b226b5b20cfd8172581d03b2c06acae4018ba8fba1c1e5f2d68f7e0ff860fd9269a02e36cc6c59e33b8c02f8168cd83e674ee074b3095

Download Submit
memory/2148-138-0x00000000008B0000-0x00000000008FE000-memory.dmp

Filesize
312KB

Download
memory/2148-137-0x00000000008B0000-0x00000000008FE000-memory.dmp

Filesize
312KB

Download
memory/2148-136-0x00000000008B0000-0x00000000008FE000-memory.dmp

Filesize
312KB

Download
memory/2148-133-0x0000000000000000-mapping.dmp

Download
memory/2148-144-0x0000000002520000-0x0000000006520000-memory.dmp

Filesize
64.0MB

Download
memory/3524-132-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/4284-141-0x0000000075260000-0x00000000752AE000-memory.dmp

Filesize
312KB

Download
memory/4284-142-0x0000000075260000-0x00000000752AE000-memory.dmp

Filesize
312KB

Download
memory/4284-143-0x0000000075260000-0x00000000752AE000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads