nymaim | 8eca01293eecbdfc490fbd0adfec2f3d391bf858604586579e59278864731a2b

General

Target

6562fd86e4a277877da0c6b675c7b35e.exe
Size

2.4MB
MD5

6562fd86e4a277877da0c6b675c7b35e
SHA1

acefc299eaa99a7c39f892b165b1187fc193daf5
SHA256

8eca01293eecbdfc490fbd0adfec2f3d391bf858604586579e59278864731a2b
SHA512

9318582e0af9e9a120a6e20152ee8e1a60c257e41840c2c87edb8d1ae6a141ebe50aa17682acee25ad1b0d8fdfe976f50c5ecfeb691d5250443e5c5e10ccdc63
SSDEEP

49152:Z2Tm14LXT7b1dhG5W34GAjC4I0KgVAVF29B+a5jOlsNnUyA5hq:MTm1APbfhz4XZI0tyVGB+ags2pDq

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

C2

45.15.156.54

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 3 IoCs

pid	Process
1656	is-MD6NT.tmp
4644	ebsearcher49.exe
2352	fv1QZhEdgvUnbG.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	ebsearcher49.exe

Loads dropped DLL 1 IoCs

pid	Process
1656	is-MD6NT.tmp

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 12 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\ebSearcher\is-RCBUK.tmp	is-MD6NT.tmp
File created	C:\Program Files (x86)\ebSearcher\is-89E3Q.tmp	is-MD6NT.tmp
File created	C:\Program Files (x86)\ebSearcher\is-B9KJH.tmp	is-MD6NT.tmp
File created	C:\Program Files (x86)\ebSearcher\is-MRV13.tmp	is-MD6NT.tmp
File opened for modification	C:\Program Files (x86)\ebSearcher\ebsearcher49.exe	is-MD6NT.tmp
File created	C:\Program Files (x86)\ebSearcher\unins000.dat	is-MD6NT.tmp
File created	C:\Program Files (x86)\ebSearcher\is-GBKCE.tmp	is-MD6NT.tmp
File created	C:\Program Files (x86)\ebSearcher\is-U0TSL.tmp	is-MD6NT.tmp
File created	C:\Program Files (x86)\ebSearcher\is-02NGG.tmp	is-MD6NT.tmp
File opened for modification	C:\Program Files (x86)\ebSearcher\unins000.dat	is-MD6NT.tmp
File created	C:\Program Files (x86)\ebSearcher\is-GBUH2.tmp	is-MD6NT.tmp
File created	C:\Program Files (x86)\ebSearcher\is-QM7B5.tmp	is-MD6NT.tmp

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
3612	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4644	ebsearcher49.exe
4644	ebsearcher49.exe
4644	ebsearcher49.exe
4644	ebsearcher49.exe
4644	ebsearcher49.exe
4644	ebsearcher49.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3612	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2368 wrote to memory of 1656	2368	6562fd86e4a277877da0c6b675c7b35e.exe	80
PID 2368 wrote to memory of 1656	2368	6562fd86e4a277877da0c6b675c7b35e.exe	80
PID 2368 wrote to memory of 1656	2368	6562fd86e4a277877da0c6b675c7b35e.exe	80
PID 1656 wrote to memory of 4644	1656	is-MD6NT.tmp	81
PID 1656 wrote to memory of 4644	1656	is-MD6NT.tmp	81
PID 1656 wrote to memory of 4644	1656	is-MD6NT.tmp	81
PID 4644 wrote to memory of 2352	4644	ebsearcher49.exe	84
PID 4644 wrote to memory of 2352	4644	ebsearcher49.exe	84
PID 4644 wrote to memory of 2352	4644	ebsearcher49.exe	84
PID 4644 wrote to memory of 2100	4644	ebsearcher49.exe	91
PID 4644 wrote to memory of 2100	4644	ebsearcher49.exe	91
PID 4644 wrote to memory of 2100	4644	ebsearcher49.exe	91
PID 2100 wrote to memory of 3612	2100	cmd.exe	93
PID 2100 wrote to memory of 3612	2100	cmd.exe	93
PID 2100 wrote to memory of 3612	2100	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\6562fd86e4a277877da0c6b675c7b35e.exe
"C:\Users\Admin\AppData\Local\Temp\6562fd86e4a277877da0c6b675c7b35e.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2368
- C:\Users\Admin\AppData\Local\Temp\is-PHC71.tmp\is-MD6NT.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-PHC71.tmp\is-MD6NT.tmp" /SL4 $E002E "C:\Users\Admin\AppData\Local\Temp\6562fd86e4a277877da0c6b675c7b35e.exe" 2249342 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1656
- - C:\Program Files (x86)\ebSearcher\ebsearcher49.exe
    "C:\Program Files (x86)\ebSearcher\ebsearcher49.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4644
  - - C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\fv1QZhEdgvUnbG.exe
      4⤵
      Executes dropped EXE
      PID:2352
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "ebsearcher49.exe" /f & erase "C:\Program Files (x86)\ebSearcher\ebsearcher49.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2100
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "ebsearcher49.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:3612

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\ebSearcher\ebsearcher49.exe

Filesize
4.0MB

MD5
fb1859c8e7da905b8f36bddd6374d156

SHA1
057b1272315f79759922869d4fa12e8e9c3b9779

SHA256
b42107d95174df64fb248361eb67ce1961ab8f791672af6c19369b48132c78cc

SHA512
76e33a9199d86dc7ffea6ff01c68f0abc100154f41c228d4044107ae6e0d73ed569860e85cdadfba1d5377c6ffc69f8786f44ae041029c75530ccc9829a9a30a

Download Submit
C:\Program Files (x86)\ebSearcher\ebsearcher49.exe

Filesize
4.0MB

MD5
fb1859c8e7da905b8f36bddd6374d156

SHA1
057b1272315f79759922869d4fa12e8e9c3b9779

SHA256
b42107d95174df64fb248361eb67ce1961ab8f791672af6c19369b48132c78cc

SHA512
76e33a9199d86dc7ffea6ff01c68f0abc100154f41c228d4044107ae6e0d73ed569860e85cdadfba1d5377c6ffc69f8786f44ae041029c75530ccc9829a9a30a

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-GLID2.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-PHC71.tmp\is-MD6NT.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-PHC71.tmp\is-MD6NT.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\fv1QZhEdgvUnbG.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\fv1QZhEdgvUnbG.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/2368-156-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2368-132-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2368-137-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4644-143-0x0000000000400000-0x00000000015F9000-memory.dmp

Filesize
18.0MB

Download
memory/4644-148-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/4644-152-0x0000000000400000-0x00000000015F9000-memory.dmp

Filesize
18.0MB

Download
memory/4644-144-0x0000000000400000-0x00000000015F9000-memory.dmp

Filesize
18.0MB

Download
memory/4644-142-0x0000000000400000-0x00000000015F9000-memory.dmp

Filesize
18.0MB

Download
memory/4644-155-0x0000000000400000-0x00000000015F9000-memory.dmp

Filesize
18.0MB

Download

Analysis

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