nymaim | 2b4a68a77e49771b18d7c7e20ef01dd08c9035cea86d93a701c76ee0bbccf455

General

Target

2b4a68a77e49771b18d7c7e20ef01dd08c9035cea86d93a701c76ee0bbccf455.exe
Size

2.5MB
MD5

9f68c6c2213fea5f1bfd06f3f6410b0a
SHA1

96b8fef9ee7b49e26f7080fd8c2948839af51767
SHA256

2b4a68a77e49771b18d7c7e20ef01dd08c9035cea86d93a701c76ee0bbccf455
SHA512

1955d948eda387a74e2302acf85a2127dea951e95f8bb41922fda8e3ebf2a98a5694421ed0f9b94de949d438aa2cca43e3f953bf1f12f2791e399bc4a14de52e
SSDEEP

49152:Z2gSNwzJrDWvgPmJUyFAtZo83Gocpc7f46ZzMkG/DRMyyA5hq:MgSEpW4PcDFoW8WPpcrJZzMdVMGDq

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

C2

45.139.105.171

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
1872	is-7LSGL.tmp
3452	fhsearcher65.exe
1356	tkUYtHYt.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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	fhsearcher65.exe

Loads dropped DLL 1 IoCs

pid	Process
1872	is-7LSGL.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 opened for modification	C:\Program Files (x86)\fhSearcher\fhsearcher65.exe	is-7LSGL.tmp
File created	C:\Program Files (x86)\fhSearcher\is-C88IE.tmp	is-7LSGL.tmp
File created	C:\Program Files (x86)\fhSearcher\is-LMR5N.tmp	is-7LSGL.tmp
File created	C:\Program Files (x86)\fhSearcher\is-QSF33.tmp	is-7LSGL.tmp
File created	C:\Program Files (x86)\fhSearcher\is-ML4QJ.tmp	is-7LSGL.tmp
File created	C:\Program Files (x86)\fhSearcher\is-RV35D.tmp	is-7LSGL.tmp
File created	C:\Program Files (x86)\fhSearcher\is-0TSQJ.tmp	is-7LSGL.tmp
File created	C:\Program Files (x86)\fhSearcher\is-UDT36.tmp	is-7LSGL.tmp
File created	C:\Program Files (x86)\fhSearcher\is-95UFC.tmp	is-7LSGL.tmp
File created	C:\Program Files (x86)\fhSearcher\unins000.dat	is-7LSGL.tmp
File created	C:\Program Files (x86)\fhSearcher\is-2NJA5.tmp	is-7LSGL.tmp
File opened for modification	C:\Program Files (x86)\fhSearcher\unins000.dat	is-7LSGL.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
2216	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3452	fhsearcher65.exe
3452	fhsearcher65.exe
3452	fhsearcher65.exe
3452	fhsearcher65.exe
3452	fhsearcher65.exe
3452	fhsearcher65.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2216	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3812 wrote to memory of 1872	3812	2b4a68a77e49771b18d7c7e20ef01dd08c9035cea86d93a701c76ee0bbccf455.exe	81
PID 3812 wrote to memory of 1872	3812	2b4a68a77e49771b18d7c7e20ef01dd08c9035cea86d93a701c76ee0bbccf455.exe	81
PID 3812 wrote to memory of 1872	3812	2b4a68a77e49771b18d7c7e20ef01dd08c9035cea86d93a701c76ee0bbccf455.exe	81
PID 1872 wrote to memory of 3452	1872	is-7LSGL.tmp	83
PID 1872 wrote to memory of 3452	1872	is-7LSGL.tmp	83
PID 1872 wrote to memory of 3452	1872	is-7LSGL.tmp	83
PID 3452 wrote to memory of 1356	3452	fhsearcher65.exe	88
PID 3452 wrote to memory of 1356	3452	fhsearcher65.exe	88
PID 3452 wrote to memory of 1356	3452	fhsearcher65.exe	88
PID 3452 wrote to memory of 2640	3452	fhsearcher65.exe	93
PID 3452 wrote to memory of 2640	3452	fhsearcher65.exe	93
PID 3452 wrote to memory of 2640	3452	fhsearcher65.exe	93
PID 2640 wrote to memory of 2216	2640	cmd.exe	95
PID 2640 wrote to memory of 2216	2640	cmd.exe	95
PID 2640 wrote to memory of 2216	2640	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\2b4a68a77e49771b18d7c7e20ef01dd08c9035cea86d93a701c76ee0bbccf455.exe
"C:\Users\Admin\AppData\Local\Temp\2b4a68a77e49771b18d7c7e20ef01dd08c9035cea86d93a701c76ee0bbccf455.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3812
- C:\Users\Admin\AppData\Local\Temp\is-JFA25.tmp\is-7LSGL.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-JFA25.tmp\is-7LSGL.tmp" /SL4 $601F0 "C:\Users\Admin\AppData\Local\Temp\2b4a68a77e49771b18d7c7e20ef01dd08c9035cea86d93a701c76ee0bbccf455.exe" 2323086 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1872
- - C:\Program Files (x86)\fhSearcher\fhsearcher65.exe
    "C:\Program Files (x86)\fhSearcher\fhsearcher65.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:3452
  - - C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\tkUYtHYt.exe
      4⤵
      Executes dropped EXE
      PID:1356
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "fhsearcher65.exe" /f & erase "C:\Program Files (x86)\fhSearcher\fhsearcher65.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2640
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "fhsearcher65.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:2216

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)\fhSearcher\fhsearcher65.exe

Filesize
3.6MB

MD5
093a16d417af7fe21901c11bbd213c82

SHA1
5fe266a7ee52cd9083e4980e4230d6bc1af419ab

SHA256
039fba0e5c52ba8c76e7e765f5134b2b6d9982199b317b16edbc1ee1ae9997dc

SHA512
69f0290ec50c7e2d20ddd27a157a3712afb3c97f2460bb9aef0653f8341aece0c0be909c74143f83f58a2f3257c842730561fa8b8aa241569f261cafc4ddf075

Download Submit
C:\Program Files (x86)\fhSearcher\fhsearcher65.exe

Filesize
3.6MB

MD5
093a16d417af7fe21901c11bbd213c82

SHA1
5fe266a7ee52cd9083e4980e4230d6bc1af419ab

SHA256
039fba0e5c52ba8c76e7e765f5134b2b6d9982199b317b16edbc1ee1ae9997dc

SHA512
69f0290ec50c7e2d20ddd27a157a3712afb3c97f2460bb9aef0653f8341aece0c0be909c74143f83f58a2f3257c842730561fa8b8aa241569f261cafc4ddf075

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-B5AO5.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-JFA25.tmp\is-7LSGL.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-JFA25.tmp\is-7LSGL.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\tkUYtHYt.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\tkUYtHYt.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/3452-143-0x0000000000400000-0x00000000015A2000-memory.dmp

Filesize
17.6MB

Download
memory/3452-142-0x0000000000400000-0x00000000015A2000-memory.dmp

Filesize
17.6MB

Download
memory/3452-147-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/3452-151-0x0000000000400000-0x00000000015A2000-memory.dmp

Filesize
17.6MB

Download
memory/3452-154-0x0000000000400000-0x00000000015A2000-memory.dmp

Filesize
17.6MB

Download
memory/3812-132-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3812-137-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3812-155-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

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