f0031f9d7f25d4d29581879f62565a5a565995899adc60213f9e218147c78593

General

Target

MuMuInstaller_3.1.7.0_gw-overseas12_all_1712735105.exe
Size

5.3MB
MD5

fbd9ad001bb2719f574c0705c5de05fb
SHA1

d07e77a490ad677935ac8213b88237e94440e791
SHA256

f0031f9d7f25d4d29581879f62565a5a565995899adc60213f9e218147c78593
SHA512

5724e3f858ae7ea92ba4ce325f3f8f4b90ecc6d7c19476e2888c4b09f0913463191b977f71314300918cceb0a6ae0b80e29d3c70891e8aeb9314da233a929e96
SSDEEP

98304:oeZOuRuvqAgef1ndGaX6tJJQv2FKA75OpVclc02vDRZTEB:1ZOPNdo3u0jc02vVZoB

Score

6^/10

discovery

Malware Config

Signatures

Downloads MZ/PE file
Drops file in Program Files directory 1 IoCs

Processes:

nemu-downloader.exe

description ioc process

File created C:\Program Files\Netease\MuMuPlayerGlobal-12.0\1.txt nemu-downloader.exe
Executes dropped EXE 6 IoCs

Processes:

nemu-downloader.exeColaBoxChecker.exeHyperVChecker.exeHyperVChecker.exeHyperVChecker.exeMuMuDownloader.exe

pid process

2564 nemu-downloader.exe
2824 ColaBoxChecker.exe
2284 HyperVChecker.exe
3040 HyperVChecker.exe
1560 HyperVChecker.exe
2908 MuMuDownloader.exe

description	ioc	process
File created	C:\Program Files\Netease\MuMuPlayerGlobal-12.0\1.txt	nemu-downloader.exe

pid	process
2564	nemu-downloader.exe
2824	ColaBoxChecker.exe
2284	HyperVChecker.exe
3040	HyperVChecker.exe
1560	HyperVChecker.exe
2908	MuMuDownloader.exe

Loads dropped DLL 18 IoCs

Processes:

MuMuInstaller_3.1.7.0_gw-overseas12_all_1712735105.exenemu-downloader.exeColaBoxChecker.exeMuMuDownloader.exe

pid	process
2836	MuMuInstaller_3.1.7.0_gw-overseas12_all_1712735105.exe
2564	nemu-downloader.exe
2564	nemu-downloader.exe
2564	nemu-downloader.exe
2564	nemu-downloader.exe
2564	nemu-downloader.exe
2824	ColaBoxChecker.exe
2824	ColaBoxChecker.exe
2564	nemu-downloader.exe
1408
2564	nemu-downloader.exe
3036
2564	nemu-downloader.exe
3000
2564	nemu-downloader.exe
2564	nemu-downloader.exe
2908	MuMuDownloader.exe
2908	MuMuDownloader.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

MuMuInstaller_3.1.7.0_gw-overseas12_all_1712735105.exenemu-downloader.exeColaBoxChecker.exeMuMuDownloader.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MuMuInstaller_3.1.7.0_gw-overseas12_all_1712735105.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nemu-downloader.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ColaBoxChecker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MuMuDownloader.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

Processes:

nemu-downloader.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436	nemu-downloader.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436\Blob = 04000000010000001000000079e4a9840d7d3a96d7c04fe2434c892e0f0000000100000014000000b34ddd372ed92e8f2abfbb9e20a9d31f204f194b090000000100000034000000303206082b0601050507030106082b0601050507030206082b0601050507030406082b0601050507030306082b0601050507030814000000010000001400000003de503556d14cbb66f0a3e21b1bc397b23dd1550b00000001000000120000004400690067006900430065007200740000001d000000010000001000000059779e39e21a2e3dfced6857ed5c5fd9030000000100000014000000a8985d3a65e5e5c4b2d7d66d40c6dd2fb19c54361900000001000000100000000f3a0527d242de2dc98e5cfcb1e991ee2000000001000000b3030000308203af30820297a0030201020210083be056904246b1a1756ac95991c74a300d06092a864886f70d01010505003061310b300906035504061302555331153013060355040a130c446967694365727420496e6331193017060355040b13107777772e64696769636572742e636f6d3120301e06035504031317446967694365727420476c6f62616c20526f6f74204341301e170d3036313131303030303030305a170d3331313131303030303030305a3061310b300906035504061302555331153013060355040a130c446967694365727420496e6331193017060355040b13107777772e64696769636572742e636f6d3120301e06035504031317446967694365727420476c6f62616c20526f6f7420434130820122300d06092a864886f70d01010105000382010f003082010a0282010100e23be11172dea8a4d3a357aa50a28f0b7790c9a2a5ee12ce965b010920cc0193a74e30b753f743c46900579de28d22dd870640008109cece1b83bfdfcd3b7146e2d666c705b37627168f7b9e1e957deeb748a308dad6af7a0c3906657f4a5d1fbc17f8abbeee28d7747f7a78995985686e5c23324bbf4ec0e85a6de370bf7710bffc01f685d9a844105832a97518d5d1a2be47e2276af49a33f84908608bd45fb43a84bfa1aa4a4c7d3ecf4f5f6c765ea04b37919edc22e66dce141a8e6acbfecdb3146417c75b299e32bff2eefad30b42d4abb74132da0cd4eff881d5bb8d583fb51be84928a270da3104ddf7b216f24c0a4e07a8ed4a3d5eb57fa390c3af270203010001a3633061300e0603551d0f0101ff040403020186300f0603551d130101ff040530030101ff301d0603551d0e0416041403de503556d14cbb66f0a3e21b1bc397b23dd155301f0603551d2304183016801403de503556d14cbb66f0a3e21b1bc397b23dd155300d06092a864886f70d01010505000382010100cb9c37aa4813120afadd449c4f52b0f4dfae04f5797908a32418fc4b2b84c02db9d5c7fef4c11f58cbb86d9c7a74e79829ab11b5e370a0a1cd4c8899938c9170e2ab0f1cbe93a9ff63d5e40760d3a3bf9d5b09f1d58ee353f48e63fa3fa7dbb466df6266d6d16e418df22db5ea774a9f9d58e22b59c04023ed2d2882453e7954922698e08048a837eff0d6796016deace80ecd6eac4417382f49dae1453e2ab93653cf3a5006f72ee8c457496c612118d504ad783c2c3a806ba7ebaf1514e9d889c1b9386ce2916c8aff64b977255730c01b24a3e1dce9df477cb5b424080530ec2dbd0bbf45bf50b9a9f3eb980112adc888c698345f8d0a3cc6e9d595956dde	nemu-downloader.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

nemu-downloader.exe

pid process

2564 nemu-downloader.exe
2564 nemu-downloader.exe
2564 nemu-downloader.exe
Suspicious behavior: LoadsDriver 4 IoCs

Processes:

pid process

476
476
476
476

pid	process
2564	nemu-downloader.exe
2564	nemu-downloader.exe
2564	nemu-downloader.exe

pid	process
476
476
476
476

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

MuMuInstaller_3.1.7.0_gw-overseas12_all_1712735105.exenemu-downloader.exe

description	pid	process	target process
PID 2836 wrote to memory of 2564	2836	MuMuInstaller_3.1.7.0_gw-overseas12_all_1712735105.exe	nemu-downloader.exe
PID 2836 wrote to memory of 2564	2836	MuMuInstaller_3.1.7.0_gw-overseas12_all_1712735105.exe	nemu-downloader.exe
PID 2836 wrote to memory of 2564	2836	MuMuInstaller_3.1.7.0_gw-overseas12_all_1712735105.exe	nemu-downloader.exe
PID 2836 wrote to memory of 2564	2836	MuMuInstaller_3.1.7.0_gw-overseas12_all_1712735105.exe	nemu-downloader.exe
PID 2836 wrote to memory of 2564	2836	MuMuInstaller_3.1.7.0_gw-overseas12_all_1712735105.exe	nemu-downloader.exe
PID 2836 wrote to memory of 2564	2836	MuMuInstaller_3.1.7.0_gw-overseas12_all_1712735105.exe	nemu-downloader.exe
PID 2836 wrote to memory of 2564	2836	MuMuInstaller_3.1.7.0_gw-overseas12_all_1712735105.exe	nemu-downloader.exe
PID 2564 wrote to memory of 2824	2564	nemu-downloader.exe	ColaBoxChecker.exe
PID 2564 wrote to memory of 2824	2564	nemu-downloader.exe	ColaBoxChecker.exe
PID 2564 wrote to memory of 2824	2564	nemu-downloader.exe	ColaBoxChecker.exe
PID 2564 wrote to memory of 2824	2564	nemu-downloader.exe	ColaBoxChecker.exe
PID 2564 wrote to memory of 2824	2564	nemu-downloader.exe	ColaBoxChecker.exe
PID 2564 wrote to memory of 2824	2564	nemu-downloader.exe	ColaBoxChecker.exe
PID 2564 wrote to memory of 2824	2564	nemu-downloader.exe	ColaBoxChecker.exe
PID 2564 wrote to memory of 2284	2564	nemu-downloader.exe	HyperVChecker.exe
PID 2564 wrote to memory of 2284	2564	nemu-downloader.exe	HyperVChecker.exe
PID 2564 wrote to memory of 2284	2564	nemu-downloader.exe	HyperVChecker.exe
PID 2564 wrote to memory of 2284	2564	nemu-downloader.exe	HyperVChecker.exe
PID 2564 wrote to memory of 3040	2564	nemu-downloader.exe	HyperVChecker.exe
PID 2564 wrote to memory of 3040	2564	nemu-downloader.exe	HyperVChecker.exe
PID 2564 wrote to memory of 3040	2564	nemu-downloader.exe	HyperVChecker.exe
PID 2564 wrote to memory of 3040	2564	nemu-downloader.exe	HyperVChecker.exe
PID 2564 wrote to memory of 1560	2564	nemu-downloader.exe	HyperVChecker.exe
PID 2564 wrote to memory of 1560	2564	nemu-downloader.exe	HyperVChecker.exe
PID 2564 wrote to memory of 1560	2564	nemu-downloader.exe	HyperVChecker.exe
PID 2564 wrote to memory of 1560	2564	nemu-downloader.exe	HyperVChecker.exe
PID 2564 wrote to memory of 2908	2564	nemu-downloader.exe	MuMuDownloader.exe
PID 2564 wrote to memory of 2908	2564	nemu-downloader.exe	MuMuDownloader.exe
PID 2564 wrote to memory of 2908	2564	nemu-downloader.exe	MuMuDownloader.exe
PID 2564 wrote to memory of 2908	2564	nemu-downloader.exe	MuMuDownloader.exe
PID 2564 wrote to memory of 2908	2564	nemu-downloader.exe	MuMuDownloader.exe
PID 2564 wrote to memory of 2908	2564	nemu-downloader.exe	MuMuDownloader.exe
PID 2564 wrote to memory of 2908	2564	nemu-downloader.exe	MuMuDownloader.exe

C:\Users\Admin\AppData\Local\Temp\MuMuInstaller_3.1.7.0_gw-overseas12_all_1712735105.exe
"C:\Users\Admin\AppData\Local\Temp\MuMuInstaller_3.1.7.0_gw-overseas12_all_1712735105.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2836

C:\Users\Admin\AppData\Local\Temp\7z77C8CB14\nemu-downloader.exe
C:\Users\Admin\AppData\Local\Temp\7z77C8CB14\nemu-downloader.exe
2⤵
- Drops file in Program Files directory
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2564

C:\Users\Admin\AppData\Local\Temp\7z77C8CB14\ColaBoxChecker.exe
"C:\Users\Admin\AppData\Local\Temp\7z77C8CB14\ColaBoxChecker.exe" checker /baseboard
3⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
PID:2824

C:\Users\Admin\AppData\Local\Temp\7z77C8CB14\HyperVChecker.exe
"C:\Users\Admin\AppData\Local\Temp\7z77C8CB14\HyperVChecker.exe"
3⤵
- Executes dropped EXE
PID:2284

C:\Users\Admin\AppData\Local\Temp\7z77C8CB14\HyperVChecker.exe
"C:\Users\Admin\AppData\Local\Temp\7z77C8CB14\HyperVChecker.exe"
3⤵
- Executes dropped EXE
PID:3040

C:\Users\Admin\AppData\Local\Temp\7z77C8CB14\HyperVChecker.exe
"C:\Users\Admin\AppData\Local\Temp\7z77C8CB14\HyperVChecker.exe"
3⤵
- Executes dropped EXE
PID:1560

C:\Users\Admin\AppData\Local\Temp\7z77C8CB14\MuMuDownloader.exe
"C:\Users\Admin\AppData\Local\Temp\7z77C8CB14\MuMuDownloader.exe" --log="C:\Users\Admin\AppData\Local\Temp\nemu-downloader-aria.log" --log-level=notice --check-certificate=false --enable-rpc=true --rpc-listen-port=49271 --continue --max-concurrent-downloads=10 --max-connection-per-server=5 --async-dns=false --file-allocation=prealloc --enable-mmap=true --connect-timeout=5 --rpc-max-request-size=1024M --stop-with-process=2564
3⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
PID:2908

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Subvert Trust Controls

1

T1553

Install Root Certificate

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\7z77C8CB14\ColaBoxChecker.exe
Filesize
4.0MB

MD5
839708e3f96cf055436fa08d6205263c

SHA1
a4579f8cb6b80fe3fd50099794f63eb51be3292f

SHA256
1373c5d006a5dbcd9b86cfff9a37616f1245d1333c4adcefc7cd18926b98d752

SHA512
ece67e031e06a0442d935e7d81d0eed57ae92b348b5d104423577478ce226e4a4bde834c54e31d33bfe6f574fb7798ba96886d9e8edb738edee6e7c9c43054cd

Download Submit
C:\Users\Admin\AppData\Local\Temp\7z77C8CB14\HyperVChecker.exe
Filesize
117KB

MD5
dbd84c6083e4badf4741d95ba3c9b5f8

SHA1
4a555adf8e0459bfd1145d9bd8d91b3fff94aad0

SHA256
9ff467bc5a1c377102d25da9fa9c24dcc4375f456510f71584f0714fdfb2af39

SHA512
fb5fe74f64254609e07d6642acf904562bb905cd7c14c6f85ba31bcdbaf06686c0586609ec4f5d2f8f55ff90334dcbb774a3a6e78df74bf1b1d0cd03dec21870

Download Submit
C:\Users\Admin\AppData\Local\Temp\7z77C8CB14\baseboard
Filesize
113B

MD5
9e2bb819804b436f8b088c0969a64d2b

SHA1
5f2fd8d249df9758dc754896c99f2e5832c36049

SHA256
9c25bf4d2b06023b400b6470f0a6d07e610fe7d195f0a98d692da85d661c11f4

SHA512
6ca7030044bfa5f3f9b9a423fd1e9de81cc6d58b977b1756c2a78e40f04fb95ab4e710ec209597dd0dd001faf18e7ff220ab63ff8c4cd46168eb2ecc8824f437

Download Submit
C:\Users\Admin\AppData\Local\Temp\7z77C8CB14\config.ini
Filesize
346B

MD5
d00fb4c61a255b58ff09886c6c72461b

SHA1
4e4f7d7ae36f67a4d6fc8479f8400b3eb769e978

SHA256
77dec4d79e1e844a2156f101defc0fc81c138a989e8ba1c722c58feb91b3cd4a

SHA512
8494ab9fe0594f3ff7b0893ca3e25d6d0a706e546e92c5b662aa864affcefe5f9721a6a95f37f40cdacf39d27a23e2b3cd5dbca4d7b8909cd7c186209d4b46db

Download Submit
C:\Users\Admin\AppData\Local\Temp\7z77C8CB14\skin.zip
Filesize
509KB

MD5
ecb43530caf9566c1b76d5af8d2097f1

SHA1
34562ada66cd1501fcb7411a1e1d86729fd7fdc0

SHA256
a12381f97aee2d91568f44b23e866ccc99f0ae5e5961f318ed24b72f4f5da80a

SHA512
4a243c0bc4dbaf892bee91ea7eff9e6a7732d3aa2df5bebd9a4bea2859a30a8511945ce3bb823f7ef921f2e1a98906fb676fce85f25fd5908646b3a2f5d02563

Download Submit
\Users\Admin\AppData\Local\Temp\7z77C8CB14\MuMuDownloader.exe
Filesize
5.7MB

MD5
2f3d77b4f587f956e9987598b0a218eb

SHA1
c067432f3282438b367a10f6b0bc0466319e34e9

SHA256
2f980c56d81f42ba47dc871a04406976dc490ded522131ce9a2e35c40ca8616e

SHA512
a63afc6d708e3b974f147a2d27d90689d8743acd53d60ad0f81a3ab54dfa851d73bcb869d1e476035abc5e234479812730285c0826a2c3da62f39715e315f221

Download Submit
\Users\Admin\AppData\Local\Temp\7z77C8CB14\nemu-downloader.exe
Filesize
3.2MB

MD5
cdf8047ceae80d9cd9eb798a57bf6084

SHA1
8e7971401fada3099aed61849745fda37e1c0d32

SHA256
1f01a9abac64fae72e0a253ad9ffe2d62cd2967c1c2bc90fb956ac446fe2b11e

SHA512
ac366f38f39b935110192d1355147392ced5a21966cc22386804356dce24b2da7971a6a60d675689f93d74014d961bfb3b0c13cf06809b9f9feef580045e20dc

Download Submit
memory/2908-94-0x0000000000A40000-0x0000000000FF5000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads