f025d82517359a0746381fe1d4ac154860f5b868b23ea0155d1600f576415cce

General

Target

3c44feb197a1df643764d3eb7ff897fb.exe
Size

160KB
MD5

3c44feb197a1df643764d3eb7ff897fb
SHA1

ca0f79773071498b3bad408612df6b9fc149ccf1
SHA256

f025d82517359a0746381fe1d4ac154860f5b868b23ea0155d1600f576415cce
SHA512

5f5c310831050ff8bbe1174843a5beabc01e397db19f1940a9c5eff623614863908b1b516ad6e0e9504ef76e3f492e5d0fcd6be9dbb1cabe52ca80dfaad4c735
SSDEEP

3072:rJLrp0cQ7QAINqPDHQncXVn7w+KUHAP90tXM1PYBnVWt4s3bIaTXum+D5DO:tLO7QAISBw+hgitclYRVS4sHTerD

Score

8^/10

aspackv2 persistence upx

Malware Config

Signatures

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

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\FastUserSwitchingCompatibility\Parameters\ServiceDll = "C:\\Windows\\system32\\FastUserSwitchingCompatibility.dll"	0b450dac.exe

ASPack v2.12-2.42 3 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral1/files/0x0008000000012224-8.dat	aspack_v212_v242
behavioral1/files/0x00250000000146b5-20.dat	aspack_v212_v242
behavioral1/files/0x002400000001495c-26.dat	aspack_v212_v242

Executes dropped EXE 1 IoCs

pid	Process
2448	0b450dac.exe

Loads dropped DLL 2 IoCs

pid	Process
2448	0b450dac.exe
3016	Svchost.exe

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0008000000012224-8.dat	upx
behavioral1/memory/2448-10-0x0000000001250000-0x0000000001274000-memory.dmp	upx
behavioral1/memory/2448-15-0x0000000001250000-0x0000000001274000-memory.dmp	upx
behavioral1/memory/2448-16-0x0000000001250000-0x0000000001274000-memory.dmp	upx
behavioral1/files/0x00250000000146b5-20.dat	upx
behavioral1/files/0x002400000001495c-26.dat	upx
behavioral1/memory/3016-30-0x0000000074E00000-0x0000000074E24000-memory.dmp	upx
behavioral1/memory/2448-31-0x0000000001250000-0x0000000001274000-memory.dmp	upx
behavioral1/memory/3016-28-0x0000000074E00000-0x0000000074E24000-memory.dmp	upx
behavioral1/memory/3016-27-0x0000000074E00000-0x0000000074E24000-memory.dmp	upx

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\2E20052C.tmp	0b450dac.exe
File opened for modification	C:\Windows\SysWOW64\FastUserSwitchingCompatibility.dll	0b450dac.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2448	0b450dac.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2524 wrote to memory of 2448	2524	3c44feb197a1df643764d3eb7ff897fb.exe	28
PID 2524 wrote to memory of 2448	2524	3c44feb197a1df643764d3eb7ff897fb.exe	28
PID 2524 wrote to memory of 2448	2524	3c44feb197a1df643764d3eb7ff897fb.exe	28
PID 2524 wrote to memory of 2448	2524	3c44feb197a1df643764d3eb7ff897fb.exe	28
PID 2524 wrote to memory of 2448	2524	3c44feb197a1df643764d3eb7ff897fb.exe	28
PID 2524 wrote to memory of 2448	2524	3c44feb197a1df643764d3eb7ff897fb.exe	28
PID 2524 wrote to memory of 2448	2524	3c44feb197a1df643764d3eb7ff897fb.exe	28

C:\Users\Admin\AppData\Local\Temp\3c44feb197a1df643764d3eb7ff897fb.exe
"C:\Users\Admin\AppData\Local\Temp\3c44feb197a1df643764d3eb7ff897fb.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2524
- C:\0b450dac.exe
  C:\0b450dac.exe
  2⤵
  - Sets DLL path for service in the registry
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  PID:2448

C:\Windows\SysWOW64\Svchost.exe
C:\Windows\SysWOW64\Svchost.exe -k netsvcs
1⤵
- Loads dropped DLL
PID:3016

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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:\0b450dac.exe

Filesize
82KB

MD5
c06ffdb3019406cb935adc703fc0108c

SHA1
d1ff5d852a051eea885d7f6ee0361e2bc02ed857

SHA256
da2f9635c9066c6381511d235fa83cc5af991831235911c43d181c11fa106510

SHA512
de730451b4c5b8d857fb9bbb5c7cfd24cbd1c300b8bf416d4de1efec32da835b896043a884d185a8dd2ba0c3ebffde15ca75548fe55edb232931f34efb32651e

Download Submit
C:\Users\Infotmp.txt

Filesize
720B

MD5
ef467361717527153e4b5ad3310f6e21

SHA1
6c79e4f566bd820f517a7a9f635705a9f2299b05

SHA256
87b7b44701f3c2a2ebfac9fa515f10d3ce316362ebffe50d91702bc695767a77

SHA512
332a546bfb9a6168dbd3e413f032cb0e853e355452c9604a7cb883e2f8d875ea732b5ad9a568e26d33d56a0ce4db010dfa7b2340fc2ec179ce21eadfe435def6

Download Submit
\Windows\SysWOW64\2E20052C.tmp

Filesize
82KB

MD5
554d3fb192071094157e94608208b61f

SHA1
82c520cf76b2769d849a388dbafffb5d446936cf

SHA256
d01a2f5736e52099f9829acb212a2f58d1a6fe8470a9789392f42c9bd73bd002

SHA512
bcfa005cdce483ac238102281e0ca077f2086f36889a18427ab74007ccdf6b689f32c8a646294273be24b1871afec7fdb6436409f28423f4d96489d868187902

Download Submit
\Windows\SysWOW64\FastUserSwitchingCompatibility.dll

Filesize
29KB

MD5
5ed5249211e69eed2bfce60508f6f4ea

SHA1
45d78369a40abbc65386f6bfd051a19e8022aadb

SHA256
2adeec4119096ea9e280ef67762fc117ff425df9b68849c2365b544aaa08b2dc

SHA512
bd0ee9305e4db6c9b2715a9ed5cc2de7293531766861c80771c578205dd13b53d055f22a397d7f0a926f97936681f7b6f3eb1e2a130c907f6c2a24d7cc2b63a0

Download Submit
memory/2448-22-0x0000000075DD0000-0x0000000075E30000-memory.dmp

Filesize
384KB

Download
memory/2448-19-0x0000000077BFF000-0x0000000077C00000-memory.dmp

Filesize
4KB

Download
memory/2448-15-0x0000000001250000-0x0000000001274000-memory.dmp

Filesize
144KB

Download
memory/2448-14-0x00000000000F0000-0x0000000000114000-memory.dmp

Filesize
144KB

Download
memory/2448-16-0x0000000001250000-0x0000000001274000-memory.dmp

Filesize
144KB

Download
memory/2448-13-0x00000000000F0000-0x0000000000114000-memory.dmp

Filesize
144KB

Download
memory/2448-31-0x0000000001250000-0x0000000001274000-memory.dmp

Filesize
144KB

Download
memory/2448-23-0x0000000074E00000-0x0000000074E24000-memory.dmp

Filesize
144KB

Download
memory/2448-34-0x0000000075DD0000-0x0000000075E30000-memory.dmp

Filesize
384KB

Download
memory/2448-10-0x0000000001250000-0x0000000001274000-memory.dmp

Filesize
144KB

Download
memory/2524-11-0x0000000000180000-0x00000000001A4000-memory.dmp

Filesize
144KB

Download
memory/2524-4-0x0000000000170000-0x0000000000199000-memory.dmp

Filesize
164KB

Download
memory/2524-2-0x0000000000170000-0x0000000000199000-memory.dmp

Filesize
164KB

Download
memory/2524-32-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2524-33-0x0000000000170000-0x000000000017D000-memory.dmp

Filesize
52KB

Download
memory/2524-0-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2524-9-0x0000000000180000-0x00000000001A4000-memory.dmp

Filesize
144KB

Download
memory/3016-30-0x0000000074E00000-0x0000000074E24000-memory.dmp

Filesize
144KB

Download
memory/3016-28-0x0000000074E00000-0x0000000074E24000-memory.dmp

Filesize
144KB

Download
memory/3016-27-0x0000000074E00000-0x0000000074E24000-memory.dmp

Filesize
144KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads