cc10702543d501956df49eddd72dc6ca417008b1c294e0163853d87cbcef2242

General

Target

cc10702543d501956df49eddd72dc6ca417008b1c294e0163853d87cbcef2242.exe
Size

116KB
MD5

a1a82671fd809d3092ae95517b3ca970
SHA1

a2a892688ee3cf7a10bbd7fbf97c1f3b93d14cfc
SHA256

cc10702543d501956df49eddd72dc6ca417008b1c294e0163853d87cbcef2242
SHA512

46983f4ebf0fed1033caa30f9983420b7723a76dfd134e9dfe9217d27c8b0476f722b8f73b3aca1f12a49743a6f8185d7ec6b602bde789d4dd4ce7e899831939
SSDEEP

1536:QMASiLNFZdO/c/L7TlqTNkKKLe0zaQr9rWxkmE+dTzZ0YHu2H8ASHcF32jj7keo5:Q3vO/cL7TURxZPQeQ6DHtsamoBz

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/0x0006000000022f58-134.dat	aspack_v212_v242
behavioral2/files/0x0006000000022f58-135.dat	aspack_v212_v242
behavioral2/files/0x0006000000022f5b-141.dat	aspack_v212_v242
behavioral2/files/0x0006000000022f5b-142.dat	aspack_v212_v242

Executes dropped EXE 1 IoCs

pid	Process
1568	41f12d54.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"	41f12d54.exe

UPX packed file 11 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0006000000022f58-134.dat	upx
behavioral2/files/0x0006000000022f58-135.dat	upx
behavioral2/memory/1568-137-0x00000000005E0000-0x0000000000604000-memory.dmp	upx
behavioral2/memory/1568-136-0x00000000005E0000-0x0000000000604000-memory.dmp	upx
behavioral2/memory/1568-138-0x00000000005E0000-0x0000000000604000-memory.dmp	upx
behavioral2/files/0x0006000000022f5b-141.dat	upx
behavioral2/files/0x0006000000022f5b-142.dat	upx
behavioral2/memory/1716-144-0x00000000758E0000-0x0000000075904000-memory.dmp	upx
behavioral2/memory/1716-143-0x00000000758E0000-0x0000000075904000-memory.dmp	upx
behavioral2/memory/1568-146-0x00000000005E0000-0x0000000000604000-memory.dmp	upx
behavioral2/memory/1716-147-0x00000000758E0000-0x0000000075904000-memory.dmp	upx

Loads dropped DLL 1 IoCs

pid	Process
1716	Svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\483E0BFC.tmp	41f12d54.exe
File opened for modification	C:\Windows\SysWOW64\FastUserSwitchingCompatibility.dll	41f12d54.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1568	41f12d54.exe
1568	41f12d54.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2288 wrote to memory of 1568	2288	cc10702543d501956df49eddd72dc6ca417008b1c294e0163853d87cbcef2242.exe	79
PID 2288 wrote to memory of 1568	2288	cc10702543d501956df49eddd72dc6ca417008b1c294e0163853d87cbcef2242.exe	79
PID 2288 wrote to memory of 1568	2288	cc10702543d501956df49eddd72dc6ca417008b1c294e0163853d87cbcef2242.exe	79

C:\Users\Admin\AppData\Local\Temp\cc10702543d501956df49eddd72dc6ca417008b1c294e0163853d87cbcef2242.exe
"C:\Users\Admin\AppData\Local\Temp\cc10702543d501956df49eddd72dc6ca417008b1c294e0163853d87cbcef2242.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2288
- C:\41f12d54.exe
  C:\41f12d54.exe
  2⤵
  - Executes dropped EXE
  - Sets DLL path for service in the registry
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  PID:1568

C:\Windows\SysWOW64\Svchost.exe
C:\Windows\SysWOW64\Svchost.exe -k netsvcs -s FastUserSwitchingCompatibility
1⤵
- Loads dropped DLL
PID:1716

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:\41f12d54.exe

Filesize
81KB

MD5
9df97113d4fb0462ca99208668d6102a

SHA1
2b769b8615735bea0592c73b16ebab7baeedca98

SHA256
9b0fa329aa52f505162bcaeb1bb3ca4ecb1543ec4a9640d7fe8f9fab7668d974

SHA512
c2b9b619f608ec561a81fc5532a47d876f3a4b092babe8d2524c7055ba922f3d85ca9932698b692850d767884e0cdebce39838b5fea9cb6177645c5bb6867a6a

Download Submit
C:\41f12d54.exe

Filesize
81KB

MD5
9df97113d4fb0462ca99208668d6102a

SHA1
2b769b8615735bea0592c73b16ebab7baeedca98

SHA256
9b0fa329aa52f505162bcaeb1bb3ca4ecb1543ec4a9640d7fe8f9fab7668d974

SHA512
c2b9b619f608ec561a81fc5532a47d876f3a4b092babe8d2524c7055ba922f3d85ca9932698b692850d767884e0cdebce39838b5fea9cb6177645c5bb6867a6a

Download Submit
C:\Users\Infotmp.txt

Filesize
720B

MD5
e09def96523f41b1a02a2beb3f778008

SHA1
c1148e2d25a9a7f1d80e32bedf3c21cba8f94b33

SHA256
20427e6733bf7c544f91a35f57525032a0dee37579a6af8c757ebdede0ed905d

SHA512
4e93437033cc02b7e31917cc1a2e3e22188be3f2b0dfbd92f84639da0642d241f2f12af98321c8bbe4717b30c4e7f7260fdcd049346440b9979590854225c92f

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/1568-137-0x00000000005E0000-0x0000000000604000-memory.dmp

Filesize
144KB

Download
memory/1568-136-0x00000000005E0000-0x0000000000604000-memory.dmp

Filesize
144KB

Download
memory/1568-138-0x00000000005E0000-0x0000000000604000-memory.dmp

Filesize
144KB

Download
memory/1568-139-0x0000000002CF0000-0x0000000006CF0000-memory.dmp

Filesize
64.0MB

Download
memory/1568-146-0x00000000005E0000-0x0000000000604000-memory.dmp

Filesize
144KB

Download
memory/1716-143-0x00000000758E0000-0x0000000075904000-memory.dmp

Filesize
144KB

Download
memory/1716-144-0x00000000758E0000-0x0000000075904000-memory.dmp

Filesize
144KB

Download
memory/1716-147-0x00000000758E0000-0x0000000075904000-memory.dmp

Filesize
144KB

Download
memory/2288-132-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download
memory/2288-140-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download

Analysis

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