50c9a604d52048f4ed1dfe847d277d2c305afb710adae8f418e659bc03bfa905

Analysis

max time kernel
91s
max time network
48s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
07/11/2022, 01:50

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General

Target

50c9a604d52048f4ed1dfe847d277d2c305afb710adae8f418e659bc03bfa905.exe
Size

168KB
MD5

0cd9e8491588e9bf65d2f9c2c953cd50
SHA1

14d311aa47ebbd3eb8c72b0b289d614b365c7141
SHA256

50c9a604d52048f4ed1dfe847d277d2c305afb710adae8f418e659bc03bfa905
SHA512

afbe1907bd34bddb11aaeaa4d820243577d922cea2b168aa76d2b587d04a39e66ffe4e9e5968b91dce3cbf6a09ccdd9c99b7230c6583a3cd8d2d39ff65674455
SSDEEP

3072:OTvj/t8bVdipDivEtGSK4KCIByHwntt+PNaA8tnc:OTrqJdyDHtGSK5yHa+F1gc

Score

7^/10

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
1708	50c9a604d52048f4ed1dfe847d277d2c305afb710adae8f418e659bc03bfa905.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\common\Utility.dll	50c9a604d52048f4ed1dfe847d277d2c305afb710adae8f418e659bc03bfa905.exe
File created	C:\Program Files\SogouPinyinUp.exe	50c9a604d52048f4ed1dfe847d277d2c305afb710adae8f418e659bc03bfa905.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Toolbar	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Toolbar\Locked = "1"	explorer.exe

Modifies registry class 37 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0 = 7e003100000000006755a25a110050726f6772616d730000660008000400efbeee3a851a6755a25a2a000000bc0100000000010000000000000000003c0000000000500072006f006700720061006d007300000040007300680065006c006c00330032002e0064006c006c002c002d0032003100370038003200000018000000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Generic"	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f50e04fd020ea3a6910a2d808002b30309d0000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0\0 = 46003100000000006755a25a100058585800340008000400efbe6755a25a6755a25a2a000000ba440100000006000000000000000000000000000000580058005800000012000000	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\KnownFolderDerivedFolderType = "{57807898-8C4F-4462-BB63-71042380B109}"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0 = 8200310000000000ee3a2828110053544152544d7e3100006a0008000400efbeee3a851aee3a28282a000000bb0100000000010000000000000000004000000000005300740061007200740020004d0065006e007500000040007300680065006c006c00330032002e0064006c006c002c002d0032003100370038003600000018000000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0\0\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 5c003100000000002155396e122050524f4752417e330000440008000400efbeee3a851a2155396e2a00000085010000000001000000000000000000000000000000500072006f006700720061006d004400610074006100000018000000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 19002f433a5c000000000000000000000000000000000000000000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 58003100000000002155886d14204d4943524f537e310000400008000400efbeee3a851a2155886d2a000000860100000000010000000000000000000000000000004d006900630072006f0073006f0066007400000018000000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0\0\NodeSlot = "1"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_Classes\Local Settings	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0 = 52003100000000002155c6a3102057696e646f7773003c0008000400efbeee3a851a2155c6a32a000000b1010000000001000000000000000000000000000000570069006e0064006f0077007300000016000000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1708 wrote to memory of 1584	1708	50c9a604d52048f4ed1dfe847d277d2c305afb710adae8f418e659bc03bfa905.exe	27
PID 1708 wrote to memory of 1584	1708	50c9a604d52048f4ed1dfe847d277d2c305afb710adae8f418e659bc03bfa905.exe	27
PID 1708 wrote to memory of 1584	1708	50c9a604d52048f4ed1dfe847d277d2c305afb710adae8f418e659bc03bfa905.exe	27
PID 1708 wrote to memory of 1584	1708	50c9a604d52048f4ed1dfe847d277d2c305afb710adae8f418e659bc03bfa905.exe	27

C:\Users\Admin\AppData\Local\Temp\50c9a604d52048f4ed1dfe847d277d2c305afb710adae8f418e659bc03bfa905.exe
"C:\Users\Admin\AppData\Local\Temp\50c9a604d52048f4ed1dfe847d277d2c305afb710adae8f418e659bc03bfa905.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1708
- C:\Windows\SysWOW64\Explorer.exe
  Explorer /select,C:\ProgramData\Microsoft\Windows\Start Menu\Programs\XXX\calcx.lnk
  2⤵
  PID:1584

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Modifies Internet Explorer settings
- Modifies registry class
PID:584

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files\SogouPinyinUp.exe

Filesize
14KB

MD5
54e9f974ac4ef96572043259326b21fc

SHA1
da8deb9e6b39f00548dff9116ce426f1c1e45496

SHA256
100f3191193ff237ce9b30ba2c1985d72cad896dcacd1c9df324905893ef8227

SHA512
a71b8a526a410bcb0face2131af7d7b64f2bccdb184e72a623eaaa4a24f80f8b5a7a74041104e212fbbab51a18be71b79726ed6121cc8a04c55f396bd484fb5a

Download Submit
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\XXX\calcx.lnk

Filesize
731B

MD5
d2396c97eb4b4b1b4e6d61cd0d5c1ca8

SHA1
b03ef58301b7daf4b4f89df082289336b6cd751f

SHA256
ce277fc1ce38e21e38d5f6ecc37cc6679d98910b7c105b57424804ac85a5834e

SHA512
03e0ccd6748afe620796e2560ec55e2163a96bae42d3012376e7d9cde78d935db922b4c9dd2e0e0bf42ace50569842902c7e50d7e0cae378acb9daf1b97da6da

Download Submit
\Program Files\SogouPinyinUp.exe

Filesize
14KB

MD5
54e9f974ac4ef96572043259326b21fc

SHA1
da8deb9e6b39f00548dff9116ce426f1c1e45496

SHA256
100f3191193ff237ce9b30ba2c1985d72cad896dcacd1c9df324905893ef8227

SHA512
a71b8a526a410bcb0face2131af7d7b64f2bccdb184e72a623eaaa4a24f80f8b5a7a74041104e212fbbab51a18be71b79726ed6121cc8a04c55f396bd484fb5a

Download Submit
memory/584-59-0x000007FEFB7F1000-0x000007FEFB7F3000-memory.dmp

Filesize
8KB

Download
memory/584-60-0x00000000039C0000-0x00000000039D0000-memory.dmp

Filesize
64KB

Download
memory/1584-58-0x0000000074161000-0x0000000074163000-memory.dmp

Filesize
8KB

Download
memory/1708-54-0x0000000075111000-0x0000000075113000-memory.dmp

Filesize
8KB

Download